diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 42b6c9d6026..7e0754a41a0 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16673,6 +16673,7 @@ in
   vte_290 = callPackage ../development/libraries/vte/2.90.nix { };
 
   vtk_7 = libsForQt515.callPackage ../development/libraries/vtk/7.x.nix {
+    stdenv = gcc9Stdenv;
     inherit (darwin) libobjc;
     inherit (darwin.apple_sdk.libs) xpc;
     inherit (darwin.apple_sdk.frameworks) Cocoa CoreServices DiskArbitration
@@ -16680,6 +16681,7 @@ in
                                           CoreText IOSurface ImageIO OpenGL GLUT;
   };
   vtk_8 = libsForQt515.callPackage ../development/libraries/vtk/8.x.nix {
+    stdenv = gcc9Stdenv;
     inherit (darwin) libobjc;
     inherit (darwin.apple_sdk.libs) xpc;
     inherit (darwin.apple_sdk.frameworks) Cocoa CoreServices DiskArbitration