diff --git a/test/support/ci/build.sh b/test/support/ci/build.sh
index 6f8ddcd1..d1137ee0 100755
--- a/test/support/ci/build.sh
+++ b/test/support/ci/build.sh
@@ -3,7 +3,7 @@
 RUBY_PLATFORM=`ruby -e 'puts RUBY_PLATFORM'`
 
 if [[ "$RUBY_PLATFORM" = "java" ]]; then
-  apk --update add git bash iptables
+  apk --update add make git bash iptables
 elif [[ ${RUBY_VERSION:0:3} = "2.1" ]]; then
   apk --update add g++ make git bash libsodium iptables
 else