diff --git a/recipe/build-core.bat b/recipe/build-core.bat
index c0819940..f04bfdb9 100644
--- a/recipe/build-core.bat
+++ b/recipe/build-core.bat
@@ -1,5 +1,6 @@
 cd python
 set SKIP_THIRDPARTY_INSTALL=1
+set RAY_INSTALL_JAVA=1
 set IS_AUTOMATED_BUILD=1
 set "BAZEL_SH=%BUILD_PREFIX%\Library\usr\bin\bash.exe"
 "%PYTHON%" setup.py install
diff --git a/recipe/build-core.sh b/recipe/build-core.sh
index 6931b017..173e9392 100644
--- a/recipe/build-core.sh
+++ b/recipe/build-core.sh
@@ -3,6 +3,7 @@ set -xe
 
 cd python/
 export SKIP_THIRDPARTY_INSTALL=1
+export RAY_INSTALL_JAVA=1
 "${PYTHON}" setup.py build
 # bazel by default makes everything read-only,
 # which leads to patchelf failing to fix rpath in binaries.
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index a56e6d7e..b23926fb 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -16,7 +16,7 @@ source:
 
 
 build:
-  number: 0
+  number: 1
   # skip on MacOS as there's some weird compilation issue and I have no MacOS to develop on
   skip: true  # [osx]
 
@@ -31,6 +31,8 @@ requirements:
     - make
     - m2-patch       # [win]
     - python
+    - openjdk =11
+    - maven
 
 outputs:
   - name: ray-all
diff --git a/recipe/yum_requirements.txt b/recipe/yum_requirements.txt
index 651811b7..72dfd8f2 100644
--- a/recipe/yum_requirements.txt
+++ b/recipe/yum_requirements.txt
@@ -4,3 +4,4 @@ libselinux
 libXdamage
 libXxf86vm
 libXext
+unzip