diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index d80a7f4ba3..32c3bd8aa6 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -82,4 +82,10 @@ jobs:
       - name: Build and Test (Linux)
         if: runner.os == 'Linux'
         run: |
-          bash .github/scripts/unix.sh -t
\ No newline at end of file
+          bash .github/scripts/unix.sh -t
+      - name: Upload build directory
+        uses: actions/upload-artifact@v2
+        if: matrix.build_type  == 'Release'
+        with:
+          name: gtsam-${{ matrix.name }}-${{ matrix.build_type }}
+          path: ${{ github.workspace }}/build/
diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index 69873980ab..cf1a474e3c 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -51,3 +51,9 @@ jobs:
         if: runner.os == 'macOS'
         run: |
           bash .github/scripts/unix.sh -t
+      - name: Upload build directory
+        uses: actions/upload-artifact@v2
+        if: matrix.build_type == 'Release'
+        with:
+          name: gtsam-${{ matrix.name }}-${{ matrix.build_type }}
+          path: ${{ github.workspace }}/build/
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index 0a55de8807..7eb908c94f 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -75,4 +75,10 @@ jobs:
           cmake --build build --config ${{ matrix.build_type }} --target wrap
           cmake --build build --config ${{ matrix.build_type }} --target check.base
           cmake --build build --config ${{ matrix.build_type }} --target check.base_unstable
-          cmake --build build --config ${{ matrix.build_type }} --target check.linear
\ No newline at end of file
+          cmake --build build --config ${{ matrix.build_type }} --target check.linear
+      - name: Upload build directory
+        uses: actions/upload-artifact@v2
+        if: matrix.build_type == 'Release'
+        with:
+          name: gtsam-${{ matrix.name }}-${{ matrix.build_type }}
+          path: ${{ github.workspace }}/build/