diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 3bd1f6c20..9df10e7cc 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -75,6 +75,11 @@ jobs:
       run: autoreconf
     - name: configure
       run: ./.github/configure.sh ${{ matrix.configs }}
+    - name: save config
+      uses: actions/upload-artifact@v2
+      with:
+        name: ${{ matrix.os }}-${{ matrix.configs }}-config
+        path: config.h
     - name: make clean
       run: make clean
     - name: make
diff --git a/.github/workflows/selfhosted.yml b/.github/workflows/selfhosted.yml
index 95c11690a..7a2e4b789 100644
--- a/.github/workflows/selfhosted.yml
+++ b/.github/workflows/selfhosted.yml
@@ -74,6 +74,11 @@ jobs:
       run: vmstartup
     - name: configure
       run: vmrun ./.github/configure.sh ${{ matrix.configs }}
+    - name: save config
+      uses: actions/upload-artifact@v2
+      with:
+        name: ${{ matrix.os }}-${{ matrix.configs }}-config
+        path: config.h
     - name: make clean
       run: vmrun make clean
     - name: make