diff --git a/pkgs/development/web/nodejs/nodejs.nix b/pkgs/development/web/nodejs/nodejs.nix
index eccdffab4c6e..0b6ec87f00aa 100644
--- a/pkgs/development/web/nodejs/nodejs.nix
+++ b/pkgs/development/web/nodejs/nodejs.nix
@@ -58,6 +58,11 @@ in
     postInstall = ''
       paxmark m $out/bin/node
       PATH=$out/bin:$PATH patchShebangs $out
+
+      ${optionalString enableNpm '' 
+        mkdir -p $out/share/bash-completion/completions/
+        $out/bin/npm completion > $out/share/bash-completion/completions/npm
+      ''}
     '';
 
     meta = {