diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d76bc67c373b..b1d11516b02f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14543,6 +14543,7 @@ with pkgs;
   blender = callPackage  ../applications/misc/blender {
     cudaSupport = config.cudaSupport or false;
     python = python35;
+    stdenv = overrideCC stdenv gcc6;
   };
 
   bluefish = callPackage ../applications/editors/bluefish {
@@ -16661,7 +16662,9 @@ with pkgs;
 
   openfx = callPackage ../development/libraries/openfx {};
 
-  openimageio = callPackage ../applications/graphics/openimageio { };
+  openimageio = callPackage ../applications/graphics/openimageio {
+    stdenv = overrideCC stdenv gcc6;
+  };
 
   openjump = callPackage ../applications/misc/openjump { };