diff --git a/backend/python/transformers/requirements-cpu.txt b/backend/python/transformers/requirements-cpu.txt
index f06a27617..ff6a9ffbb 100644
--- a/backend/python/transformers/requirements-cpu.txt
+++ b/backend/python/transformers/requirements-cpu.txt
@@ -6,4 +6,4 @@ transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.4
\ No newline at end of file
+protobuf==6.33.5
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-cublas12.txt b/backend/python/transformers/requirements-cublas12.txt
index 8497cf7e7..8e1d2e0b1 100644
--- a/backend/python/transformers/requirements-cublas12.txt
+++ b/backend/python/transformers/requirements-cublas12.txt
@@ -6,4 +6,4 @@ transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.4
\ No newline at end of file
+protobuf==6.33.5
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-cublas13.txt b/backend/python/transformers/requirements-cublas13.txt
index 536978f8d..35ac19c6e 100644
--- a/backend/python/transformers/requirements-cublas13.txt
+++ b/backend/python/transformers/requirements-cublas13.txt
@@ -6,4 +6,4 @@ transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.4
\ No newline at end of file
+protobuf==6.33.5
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-hipblas.txt b/backend/python/transformers/requirements-hipblas.txt
index 0576c6acf..8abcc795d 100644
--- a/backend/python/transformers/requirements-hipblas.txt
+++ b/backend/python/transformers/requirements-hipblas.txt
@@ -8,4 +8,4 @@ bitsandbytes
 outetts
 bitsandbytes
 sentence-transformers==5.2.0
-protobuf==6.33.4
\ No newline at end of file
+protobuf==6.33.5
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-intel.txt b/backend/python/transformers/requirements-intel.txt
index 8d856e0be..0a05df791 100644
--- a/backend/python/transformers/requirements-intel.txt
+++ b/backend/python/transformers/requirements-intel.txt
@@ -7,4 +7,4 @@ transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.4
\ No newline at end of file
+protobuf==6.33.5
\ No newline at end of file
diff --git a/backend/python/transformers/requirements.txt b/backend/python/transformers/requirements.txt
index 5006c007f..85d3d9a41 100644
--- a/backend/python/transformers/requirements.txt
+++ b/backend/python/transformers/requirements.txt
@@ -1,5 +1,5 @@
 grpcio==1.76.0
-protobuf==6.33.4
+protobuf==6.33.5
 certifi
 setuptools
 scipy==1.15.1