diff --git a/flake.nix b/flake.nix
index eb7236b..d5565ad 100644
--- a/flake.nix
+++ b/flake.nix
@@ -44,7 +44,7 @@
                 extensions.vscode-marketplace.ms-vscode-remote.remote-containers
                 extensions.vscode-marketplace.ms-python.pylint
                 extensions.vscode-marketplace.ms-python.flake8
-                extensions.vscode-marketplace.github.copilot-chat
+                (extensions.forVSCodeVersion "1.83.1").github.copilot-chat
               ];
             };