diff --git a/benchmark/pom.xml b/benchmark/pom.xml
index f9f4816..6f2aafd 100644
--- a/benchmark/pom.xml
+++ b/benchmark/pom.xml
@@ -31,6 +31,8 @@
     </developers>
     <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+      <maven.compiler.source>1.8</maven.compiler.source>
+      <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
     <dependencies>
         <dependency>
diff --git a/examples/pom.xml b/examples/pom.xml
index bf3648e..ff0190f 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -31,6 +31,8 @@
     </developers>
     <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+      <maven.compiler.source>1.8</maven.compiler.source>
+      <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
     <dependencies>
         <dependency>
diff --git a/runtime/pom.xml b/runtime/pom.xml
index 1a65045..9f0ab52 100644
--- a/runtime/pom.xml
+++ b/runtime/pom.xml
@@ -31,6 +31,8 @@
     </developers>
     <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+      <maven.compiler.source>1.8</maven.compiler.source>
+      <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
     <dependencies>
         <dependency>