diff --git a/.github/workflows/nix-ci.yml b/.github/workflows/nix-ci.yml
index 249a645e4e..f838474888 100644
--- a/.github/workflows/nix-ci.yml
+++ b/.github/workflows/nix-ci.yml
@@ -82,7 +82,7 @@ jobs:
       - name: Build
         run: |
           # .o files are not a runtime dependency on macOS because of lack of thin archives
-          nix build $NIX_BUILD_ARGS .#stage0 .#lean .#leanc .#lean-all .#Lean.oTree .#iTree .#modDepsFiles -o push-build
+          nix build $NIX_BUILD_ARGS .#stage0 .#lean .#leanc .#lean-all .#Lean.oTree .#iTree .#modDepsFiles .#Leanc.src -o push-build
       - name: Test
         run: |
           nix build $NIX_BUILD_ARGS .#test -o push-test