diff --git a/backend/python/transformers/requirements-cpu.txt b/backend/python/transformers/requirements-cpu.txt
index 9fd634b34..f06a27617 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==6.33.2
\ No newline at end of file
+protobuf==6.33.4
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-cublas12.txt b/backend/python/transformers/requirements-cublas12.txt
index 5d1dc178a..8497cf7e7 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==6.33.2
\ No newline at end of file
+protobuf==6.33.4
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-cublas13.txt b/backend/python/transformers/requirements-cublas13.txt
index 953ef37e9..536978f8d 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==6.33.2
\ No newline at end of file
+protobuf==6.33.4
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-hipblas.txt b/backend/python/transformers/requirements-hipblas.txt
index 59f99e364..0576c6acf 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==6.33.2
\ No newline at end of file
+protobuf==6.33.4
\ No newline at end of file
diff --git a/backend/python/transformers/requirements-intel.txt b/backend/python/transformers/requirements-intel.txt
index 326a14468..836861246 100644
--- a/backend/python/transformers/requirements-intel.txt
+++ b/backend/python/transformers/requirements-intel.txt
@@ -10,4 +10,4 @@ intel-extension-for-transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.2
\ No newline at end of file
+protobuf==6.33.4
\ No newline at end of file
diff --git a/backend/python/transformers/requirements.txt b/backend/python/transformers/requirements.txt
index 307f44d29..5006c007f 100644
--- a/backend/python/transformers/requirements.txt
+++ b/backend/python/transformers/requirements.txt
@@ -1,5 +1,5 @@
 grpcio==1.76.0
-protobuf==6.33.2
+protobuf==6.33.4
 certifi
 setuptools
 scipy==1.15.1