diff --git a/pkgs/servers/web-apps/lemmy/ui.nix b/pkgs/servers/web-apps/lemmy/ui.nix
index 65076eaa89e4..3377b54c861f 100644
--- a/pkgs/servers/web-apps/lemmy/ui.nix
+++ b/pkgs/servers/web-apps/lemmy/ui.nix
@@ -64,6 +64,7 @@ mkYarnPackage {
     export HOME=$PWD/yarn_home
 
     ln -sf $PWD/node_modules $PWD/deps/lemmy-ui/
+    echo 'export const VERSION = "${version}";' > $PWD/deps/lemmy-ui/src/shared/version.ts
 
     yarn --offline build:prod
   '';
@@ -74,10 +75,6 @@ mkYarnPackage {
     cp -R ./node_modules $out
   '';
 
-  postInstall = ''
-    echo 'export const VERSION = "${version}";' > $out/libexec/lemmy-ui/deps/lemmy-ui/src/shared/version.ts
-  '';
-
   distPhase = "true";
 
   passthru.updateScript = ./update.sh;