diff --git a/pkgs/by-name/py/pyrefly/package.nix b/pkgs/by-name/py/pyrefly/package.nix
index b7dfaf81f525..8c2caafb000e 100644
--- a/pkgs/by-name/py/pyrefly/package.nix
+++ b/pkgs/by-name/py/pyrefly/package.nix
@@ -38,7 +38,10 @@ rustPlatform.buildRustPackage (finalAttrs: {
     export TMPDIR=$(mktemp -d)
   '';
 
-  passthru.updateScript = nix-update-script { };
+  # avoid autoupdates for *-dev.* tags
+  passthru.updateScript = nix-update-script {
+    extraArgs = [ "--version-regex=^([\\d.]+)$" ];
+  };
 
   meta = {
     description = "Fast type checker and IDE for Python";