diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 897f4e5..6efb480 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -100,6 +100,7 @@ jobs:
           cd build
           cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release ..
           nmake
+          copy zconf.h ..
         shell: cmd
 
       # ── 5. Build libgit2 ──────────────────────────────────────────────────