From 6f3bab216d91a50960faf120f80b11c3e1c010ed Mon Sep 17 00:00:00 2001
From: Fergus Henderson <fergus@google.com>
Date: Wed, 1 Oct 2025 16:09:04 -0700
Subject: [PATCH] Update from flatbuffers 25.2.10 to 25.9.23.

PiperOrigin-RevId: 813955553
---
 .../numpy1_requirements/requirements.in                   | 2 +-
 .../numpy1_requirements/requirements_lock_3_10.txt        | 6 +++---
 .../numpy1_requirements/requirements_lock_3_11.txt        | 6 +++---
 .../numpy1_requirements/requirements_lock_3_12.txt        | 6 +++---
 .../numpy1_requirements/requirements_lock_3_9.txt         | 6 +++---
 ci/official/requirements_updater/requirements.in          | 2 +-
 requirements_lock_3_10.txt                                | 6 +++---
 requirements_lock_3_11.txt                                | 6 +++---
 requirements_lock_3_12.txt                                | 6 +++---
 requirements_lock_3_13.txt                                | 8 ++++----
 requirements_lock_3_9.txt                                 | 6 +++---
 .../mlir/lite/schema/conversion_metadata_generated.h      | 4 ++--
 tensorflow/compiler/mlir/lite/schema/schema_generated.h   | 4 ++--
 .../acceleration/configuration/configuration_generated.h  | 4 ++--
 .../delegates/gpu/cl/compiled_program_cache_generated.h   | 4 ++--
 .../lite/delegates/gpu/cl/serialization_generated.h       | 4 ++--
 .../lite/delegates/gpu/common/gpu_model_generated.h       | 4 ++--
 .../gpu/common/task/tflite_serialization_base_generated.h | 4 ++--
 .../acceleration/configuration/configuration_generated.h  | 4 ++--
 tensorflow/lite/tools/cmake/modules/flatbuffers.cmake     | 2 +-
 tensorflow/tools/ci_build/release/requirements_common.txt | 2 +-
 tensorflow/tools/pip_package/setup.py.tpl                 | 2 +-
 .../tools/tf_sig_build_dockerfiles/devel.requirements.txt | 2 +-
 third_party/flatbuffers/workspace.bzl                     | 6 +++---
 24 files changed, 53 insertions(+), 53 deletions(-)

diff --git a/ci/official/requirements_updater/numpy1_requirements/requirements.in b/ci/official/requirements_updater/numpy1_requirements/requirements.in
index bad185ceac7..c6a88054433 100644
--- a/ci/official/requirements_updater/numpy1_requirements/requirements.in
+++ b/ci/official/requirements_updater/numpy1_requirements/requirements.in
@@ -38,4 +38,4 @@ zstandard==0.23.0
 tensorflow-io-gcs-filesystem==0.37.1 ; python_version <= "3.12"
 libclang >= 13.0.0
 google_pasta ~= 0.2
-flatbuffers ~= 24.3.25
+flatbuffers ~= 25.9.23
diff --git a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_10.txt b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_10.txt
index 1e4f85c2ab7..1bef2b2f790 100644
--- a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_10.txt
+++ b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_10.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_11.txt b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_11.txt
index 19da7ab86c0..7bc734c2624 100644
--- a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_11.txt
+++ b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_11.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_12.txt b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_12.txt
index f0b93a1e52b..8d9d9dc47fc 100644
--- a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_12.txt
+++ b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_12.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_9.txt b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_9.txt
index 9a4144d10d9..41eb61f5557 100644
--- a/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_9.txt
+++ b/ci/official/requirements_updater/numpy1_requirements/requirements_lock_3_9.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/ci/official/requirements_updater/requirements.in b/ci/official/requirements_updater/requirements.in
index ce5ecbd998c..2a1fb43664c 100644
--- a/ci/official/requirements_updater/requirements.in
+++ b/ci/official/requirements_updater/requirements.in
@@ -38,4 +38,4 @@ zstandard==0.23.0
 tensorflow-io-gcs-filesystem==0.37.1 ; python_version <= "3.12"
 libclang >= 13.0.0
 google_pasta ~= 0.2
-flatbuffers ~= 24.3.25
+flatbuffers ~= 25.9.23
diff --git a/requirements_lock_3_10.txt b/requirements_lock_3_10.txt
index 34b2ea8a386..36a6e6b78b5 100644
--- a/requirements_lock_3_10.txt
+++ b/requirements_lock_3_10.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/requirements_lock_3_11.txt b/requirements_lock_3_11.txt
index e7b4bbae642..6238e70c957 100644
--- a/requirements_lock_3_11.txt
+++ b/requirements_lock_3_11.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/requirements_lock_3_12.txt b/requirements_lock_3_12.txt
index 6e821e61b1f..2d655921b2f 100644
--- a/requirements_lock_3_12.txt
+++ b/requirements_lock_3_12.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/requirements_lock_3_13.txt b/requirements_lock_3_13.txt
index 4974d7477a6..45461447246 100644
--- a/requirements_lock_3_13.txt
+++ b/requirements_lock_3_13.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
@@ -921,4 +921,4 @@ setuptools==78.1.1 \
     --hash=sha256:fcc17fd9cd898242f6b4adfaca46137a9edef687f43e6f78469692a5e70d851d
     # via
     #   -r ci/official/requirements_updater/requirements.in
-    #   tb-nightly
\ No newline at end of file
+    #   tb-nightly
diff --git a/requirements_lock_3_9.txt b/requirements_lock_3_9.txt
index 44318f02618..26e2d0ae191 100644
--- a/requirements_lock_3_9.txt
+++ b/requirements_lock_3_9.txt
@@ -124,9 +124,9 @@ dill==0.3.7 \
     --hash=sha256:76b122c08ef4ce2eedcd4d1abd8e641114bfc6c2867f49f3c41facf65bf19f5e \
     --hash=sha256:cc1c8b182eb3013e24bd475ff2e9295af86c1a38eb1aff128dac8962a9ce3c03
     # via -r ci/official/requirements_updater/requirements.in
-flatbuffers==24.3.25 \
-    --hash=sha256:8dbdec58f935f3765e4f7f3cf635ac3a77f83568138d6a2311f524ec96364812 \
-    --hash=sha256:de2ec5b203f21441716617f38443e0a8ebf3d25bf0d9c0bb0ce68fa00ad546a4
+flatbuffers==25.9.23 \
+    --hash=sha256:255538574d6cb6d0a79a17ec8bc0d30985913b87513a01cce8bcdb6b4c44d0e2 \
+    --hash=sha256:676f9fa62750bb50cf531b42a0a2a118ad8f7f797a511eda12881c016f093b12
     # via -r ci/official/requirements_updater/requirements.in
 gast==0.4.0 \
     --hash=sha256:40feb7b8b8434785585ab224d1568b857edb18297e5a3047f1ba012bc83b42c1 \
diff --git a/tensorflow/compiler/mlir/lite/schema/conversion_metadata_generated.h b/tensorflow/compiler/mlir/lite/schema/conversion_metadata_generated.h
index 950439bfc14..f78ce6a2290 100755
--- a/tensorflow/compiler/mlir/lite/schema/conversion_metadata_generated.h
+++ b/tensorflow/compiler/mlir/lite/schema/conversion_metadata_generated.h
@@ -23,8 +23,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 namespace tflite {
diff --git a/tensorflow/compiler/mlir/lite/schema/schema_generated.h b/tensorflow/compiler/mlir/lite/schema/schema_generated.h
index a8275936736..43d51c40f01 100755
--- a/tensorflow/compiler/mlir/lite/schema/schema_generated.h
+++ b/tensorflow/compiler/mlir/lite/schema/schema_generated.h
@@ -23,8 +23,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 namespace tflite {
diff --git a/tensorflow/lite/acceleration/configuration/configuration_generated.h b/tensorflow/lite/acceleration/configuration/configuration_generated.h
index 1f607290338..645d1e11f82 100644
--- a/tensorflow/lite/acceleration/configuration/configuration_generated.h
+++ b/tensorflow/lite/acceleration/configuration/configuration_generated.h
@@ -23,8 +23,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 namespace tflite {
diff --git a/tensorflow/lite/delegates/gpu/cl/compiled_program_cache_generated.h b/tensorflow/lite/delegates/gpu/cl/compiled_program_cache_generated.h
index 676670f1e8b..2151d996472 100755
--- a/tensorflow/lite/delegates/gpu/cl/compiled_program_cache_generated.h
+++ b/tensorflow/lite/delegates/gpu/cl/compiled_program_cache_generated.h
@@ -23,8 +23,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 namespace tflite {
diff --git a/tensorflow/lite/delegates/gpu/cl/serialization_generated.h b/tensorflow/lite/delegates/gpu/cl/serialization_generated.h
index fa9356613df..07ebfdfdaa0 100755
--- a/tensorflow/lite/delegates/gpu/cl/serialization_generated.h
+++ b/tensorflow/lite/delegates/gpu/cl/serialization_generated.h
@@ -23,8 +23,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 #include "gpu_model_generated.h"
diff --git a/tensorflow/lite/delegates/gpu/common/gpu_model_generated.h b/tensorflow/lite/delegates/gpu/common/gpu_model_generated.h
index 4ad3e771298..6602b2d761d 100755
--- a/tensorflow/lite/delegates/gpu/common/gpu_model_generated.h
+++ b/tensorflow/lite/delegates/gpu/common/gpu_model_generated.h
@@ -22,8 +22,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 #include "tflite_serialization_base_generated.h"
diff --git a/tensorflow/lite/delegates/gpu/common/task/tflite_serialization_base_generated.h b/tensorflow/lite/delegates/gpu/common/task/tflite_serialization_base_generated.h
index 3e50db9e38f..d3d49ade48d 100755
--- a/tensorflow/lite/delegates/gpu/common/task/tflite_serialization_base_generated.h
+++ b/tensorflow/lite/delegates/gpu/common/task/tflite_serialization_base_generated.h
@@ -23,8 +23,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 namespace tflite {
diff --git a/tensorflow/lite/experimental/acceleration/configuration/configuration_generated.h b/tensorflow/lite/experimental/acceleration/configuration/configuration_generated.h
index ab2f789d409..5878ed261de 100644
--- a/tensorflow/lite/experimental/acceleration/configuration/configuration_generated.h
+++ b/tensorflow/lite/experimental/acceleration/configuration/configuration_generated.h
@@ -23,8 +23,8 @@ limitations under the License.
 // Ensure the included flatbuffers.h is the same version as when this file was
 // generated, otherwise it may not be compatible.
 static_assert(FLATBUFFERS_VERSION_MAJOR == 25 &&
-              FLATBUFFERS_VERSION_MINOR == 2 &&
-              FLATBUFFERS_VERSION_REVISION == 10,
+              FLATBUFFERS_VERSION_MINOR == 9 &&
+              FLATBUFFERS_VERSION_REVISION == 23,
              "Non-compatible flatbuffers version included");
 
 namespace tflite {
diff --git a/tensorflow/lite/tools/cmake/modules/flatbuffers.cmake b/tensorflow/lite/tools/cmake/modules/flatbuffers.cmake
index c2ae769c941..014503dd989 100644
--- a/tensorflow/lite/tools/cmake/modules/flatbuffers.cmake
+++ b/tensorflow/lite/tools/cmake/modules/flatbuffers.cmake
@@ -23,7 +23,7 @@ OverridableFetchContent_Declare(
   flatbuffers
   GIT_REPOSITORY https://github.com/google/flatbuffers
   # Keep in sync with tensorflow/third_party/flatbuffers/workspace.bzl
-  GIT_TAG v25.2.10
+  GIT_TAG v25.9.23
   # NOTE: b/340264458 - `GIT_SHALLOW TRUE` works for tag name only.
   GIT_SHALLOW FALSE
   GIT_PROGRESS TRUE
diff --git a/tensorflow/tools/ci_build/release/requirements_common.txt b/tensorflow/tools/ci_build/release/requirements_common.txt
index 9e31bd33ac4..1a6bd10f8fe 100644
--- a/tensorflow/tools/ci_build/release/requirements_common.txt
+++ b/tensorflow/tools/ci_build/release/requirements_common.txt
@@ -3,7 +3,7 @@
 # This will change in the future.
 absl-py ~= 1.0.0
 astunparse ~= 1.6.3
-flatbuffers ~= 25.2.10
+flatbuffers ~= 25.9.23
 google_pasta ~= 0.2
 h5py ~= 3.10.0  # Earliest version for Python 3.12
 ml_dtypes ~= 0.5.1
diff --git a/tensorflow/tools/pip_package/setup.py.tpl b/tensorflow/tools/pip_package/setup.py.tpl
index 3ee66059181..94cb080c4f9 100644
--- a/tensorflow/tools/pip_package/setup.py.tpl
+++ b/tensorflow/tools/pip_package/setup.py.tpl
@@ -97,7 +97,7 @@ def standard_or_nightly(standard, nightly):
 REQUIRED_PACKAGES = [
     'absl-py >= 1.0.0',
     'astunparse >= 1.6.0',
-    'flatbuffers >= 25.2.10',
+    'flatbuffers >= 25.9.23',
     'gast >=0.2.1,!=0.5.0,!=0.5.1,!=0.5.2',
     'google_pasta >= 0.1.1',
     'libclang >= 13.0.0',
diff --git a/tensorflow/tools/tf_sig_build_dockerfiles/devel.requirements.txt b/tensorflow/tools/tf_sig_build_dockerfiles/devel.requirements.txt
index deb23bf29bb..296ff198cc3 100644
--- a/tensorflow/tools/tf_sig_build_dockerfiles/devel.requirements.txt
+++ b/tensorflow/tools/tf_sig_build_dockerfiles/devel.requirements.txt
@@ -6,7 +6,7 @@
 # This will change in the future.
 absl-py ~= 1.0.0
 astunparse ~= 1.6.3
-flatbuffers ~= 25.2.10
+flatbuffers ~= 25.9.23
 google_pasta ~= 0.2
 h5py ~= 3.11.0 # Earliest version for NumPy 2.0
 ml_dtypes ~= 0.5.1 # Earliest version with mxfloat types
diff --git a/third_party/flatbuffers/workspace.bzl b/third_party/flatbuffers/workspace.bzl
index 16c70e587af..aa0ba40e8ae 100644
--- a/third_party/flatbuffers/workspace.bzl
+++ b/third_party/flatbuffers/workspace.bzl
@@ -2,10 +2,10 @@
 
 load("//third_party:repo.bzl", "tf_http_archive", "tf_mirror_urls")
 
-_FLATBUFFERS_VERSION = "25.2.10"
+_FLATBUFFERS_VERSION = "25.9.23"
 
-# curl -L https://github.com/google/flatbuffers/archive/<_FLATBUFFERS_VERSION>.tar.gz | shasum -a 256
-_FLATBUFFERS_SHA256 = "b9c2df49707c57a48fc0923d52b8c73beb72d675f9d44b2211e4569be40a7421"
+# curl -L https://github.com/google/flatbuffers/archive/v<_FLATBUFFERS_VERSION>.tar.gz | shasum -a 256
+_FLATBUFFERS_SHA256 = "9102253214dea6ae10c2ac966ea1ed2155d22202390b532d1dea64935c518ada"
 
 def repo():
     tf_http_archive(