diff --git a/2configs/tools/dev.nix b/2configs/tools/dev.nix
index 94e77e6..30e16f8 100644
--- a/2configs/tools/dev.nix
+++ b/2configs/tools/dev.nix
@@ -2,7 +2,7 @@
 
 {
   users.users.makefu.packages = with pkgs;[
-    (python3.withPackages(ps: [
+    (python37.withPackages(ps: [
       ps.python-language-server
       # the following plugins are optional, they provide type checking, import sorting and code formatting
       ps.pyls-mypy ps.pyls-isort ps.pyls-black