diff --git a/shell.nix b/shell.nix
index 7e1ef56..009f2dd 100644
--- a/shell.nix
+++ b/shell.nix
@@ -4,7 +4,7 @@ with pkgs;
 
 mkShell {
   buildInputs = [
-    go_1_18
+    go_1_21
     gotools
     gopls
     go-outline