diff --git a/pkgs/by-name/pr/prometheus-node-exporter/package.nix b/pkgs/by-name/pr/prometheus-node-exporter/package.nix
index ef311b013bdd..ac5e4bc80de4 100644
--- a/pkgs/by-name/pr/prometheus-node-exporter/package.nix
+++ b/pkgs/by-name/pr/prometheus-node-exporter/package.nix
@@ -13,7 +13,7 @@ buildGoModule (finalAttrs: {
   src = fetchFromGitHub {
     owner = "prometheus";
     repo = "node_exporter";
-    tag = "${finalAttrs.version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-UaybbRmcvifXNwTNXg7mIYN9JnonSxwG62KfvU5auIE=";
   };