diff --git a/pkgs/development/libraries/protobuf/33.nix b/pkgs/development/libraries/protobuf/33.nix
index a1973638f0eb..25455d41d31d 100644
--- a/pkgs/development/libraries/protobuf/33.nix
+++ b/pkgs/development/libraries/protobuf/33.nix
@@ -2,8 +2,8 @@
 
 callPackage ./generic.nix (
   {
-    version = "33.5";
-    hash = "sha256-bn8wMZSAqukZyo+fLT4O044ld53FvIfCdajr2WwM93E=";
+    version = "33.6";
+    hash = "sha256-Uoj1Q5D+ofWFc/GPOgOHgIWVwKrpJrpkHMpL+yU0/k8=";
   }
   // args
 )
diff --git a/pkgs/development/python-modules/protobuf/6.nix b/pkgs/development/python-modules/protobuf/6.nix
index 1d05e4ad3346..6c96954b0df7 100644
--- a/pkgs/development/python-modules/protobuf/6.nix
+++ b/pkgs/development/python-modules/protobuf/6.nix
@@ -9,12 +9,12 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "protobuf";
-  version = "6.33.5";
+  version = "6.33.6";
   pyproject = true;
 
   src = fetchPypi {
     inherit (finalAttrs) pname version;
-    hash = "sha256-bdysKggfi3uWQsCUBrxqQpASj85fRxzd0WWWC7kRnlw=";
+    hash = "sha256-pnaNJSSDEsKXVYr5ap+ckp6MTO4GWcsH54BzEJXzgTU=";
   };
 
   build-system = [ setuptools ];