diff --git a/pkgs/by-name/he/heroic/package.nix b/pkgs/by-name/he/heroic/package.nix
index 77dc9a494db8..4884a733ecd1 100644
--- a/pkgs/by-name/he/heroic/package.nix
+++ b/pkgs/by-name/he/heroic/package.nix
@@ -19,4 +19,6 @@ steam.buildRuntimeEnv {
     ln -s ${heroic-unwrapped}/share/applications $out/share
     ln -s ${heroic-unwrapped}/share/icons $out/share
   '';
+
+  privateTmp = false;
 }
diff --git a/pkgs/by-name/st/steam/package.nix b/pkgs/by-name/st/steam/package.nix
index 06c08f7490ef..99b28d32bb68 100644
--- a/pkgs/by-name/st/steam/package.nix
+++ b/pkgs/by-name/st/steam/package.nix
@@ -21,6 +21,7 @@ let
       extraPreBwrapCmds ? "",
       extraBwrapArgs ? [ ],
       extraEnv ? { },
+      privateTmp ? true,
       ...
     }@args:
     buildFHSEnv (
@@ -150,6 +151,7 @@ buildRuntimeEnv {
     extraPreBwrapCmds
     extraBwrapArgs
     extraEnv
+    privateTmp
     ;
 
   runScript = writeShellScript "steam-wrapped" ''
@@ -175,6 +177,7 @@ buildRuntimeEnv {
             extraPreBwrapCmds
             extraBwrapArgs
             extraEnv
+            privateTmp
             ;
 
           runScript = writeShellScript "steam-run" ''