diff --git a/pkgs/development/compilers/cudatoolkit/default.nix b/pkgs/development/compilers/cudatoolkit/default.nix
index 97aabf36e263..65e9eb827605 100644
--- a/pkgs/development/compilers/cudatoolkit/default.nix
+++ b/pkgs/development/compilers/cudatoolkit/default.nix
@@ -86,5 +86,5 @@ rec {
     gcc = gcc10; # can bump to 11 along with stdenv.cc
   };
 
-  cudatoolkit_11 = cudatoolkit_11_6;
+  cudatoolkit_11 = cudatoolkit_11_5;
 }