diff --git a/.github/workflows/java.yml b/.github/workflows/java.yml
index 518aa643..79e341ce 100644
--- a/.github/workflows/java.yml
+++ b/.github/workflows/java.yml
@@ -75,7 +75,7 @@ jobs:
           iwr -useb https://pixi.sh/install.ps1 | iex
           echo "${HOME}/AppData/Local/pixi/bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
       - name: Test Java
-        run: pixi run test-java
+        run: pixi run test-java-win
       - name: Copy native lib
         run: |
           mkdir -p native/win-64
diff --git a/pixi.toml b/pixi.toml
index 26942838..f301e76d 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -47,15 +47,24 @@ build-rs-vegafusion-server = { cmd = "cargo build -p vegafusion-server --release
 # Java
 build-jni = "cargo build -p vegafusion-jni --release $0"
 build-jar = "export VEGAFUSION_JNI_LIBRARIES=$1 && cd java && ./gradlew jar"
+build-jar-win = "export VEGAFUSION_JNI_LIBRARIES=$1 && cd java && ./gradlew.bat jar"
 
 [tasks.test-java]
 cmd = """
-export VEGAFUSION_JNI_LIBRARY=$(python automation/find_file.py $PIXI_PACKAGE_ROOT/target/release/ \"libvegafusion_jni\\.(so|dylib|dll)$\") &&
+export VEGAFUSION_JNI_LIBRARY=$(python automation/find_file.py $PIXI_PACKAGE_ROOT/target/release/ \"libvegafusion_jni\\.(so|dylib)$\") &&
 cd java &&
 ./gradlew test $0
 """
 depends_on = ["build-jni"]
 
+[tasks.test-java-win]
+cmd = """
+export VEGAFUSION_JNI_LIBRARY=$PIXI_PACKAGE_ROOT/target/release/vegafusion_jni.dll &&
+cd java &&
+./gradlew.bat test $0
+"""
+depends_on = ["build-jni"]
+
 # Build dependencies are those required to build and test all packages
 [build-dependencies]
 python = "3.10.*"