diff --git a/appveyor.yml b/appveyor.yml
index 689be0f2..30ba6a16 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -15,6 +15,8 @@ install:
   - cmd: SET PATH=C:\maven\apache-maven-3.2.5\bin;%JAVA_HOME%\bin;%PATH%
   - cmd: SET MAVEN_OPTS=-XX:MaxPermSize=2g -Xmx4g
   - cmd: SET JAVA_OPTS=-XX:MaxPermSize=2g -Xmx4g
+  - cmd: mvn --version
+  - cmd: java -version
 build_script:
   - mvn clean package -B -Dmaven.test.skip=true
 test_script: