diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f8b43454..5bbea2d3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -52,6 +52,11 @@ jobs:
                 git clone https://github.com/herumi/mcl
                 cd mcl
                 make -j4
+                cd ffi/java
+                mkdir build
+                cd build
+                cmake ..
+                cmake --build . --config Release
 
             - name: Install Nix
               uses: cachix/install-nix-action@v27