diff --git a/benchmark/pom.xml b/benchmark/pom.xml
index 18192a7..ea0f3e9 100644
--- a/benchmark/pom.xml
+++ b/benchmark/pom.xml
@@ -33,6 +33,7 @@
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
       <maven.compiler.source>1.8</maven.compiler.source>
       <maven.compiler.target>1.8</maven.compiler.target>
+      <maven.compiler.release>8</maven.compiler.release>
     </properties>
     <dependencies>
         <dependency>
diff --git a/examples/pom.xml b/examples/pom.xml
index 899c8fb..868d27b 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -33,6 +33,7 @@
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
       <maven.compiler.source>1.8</maven.compiler.source>
       <maven.compiler.target>1.8</maven.compiler.target>
+      <maven.compiler.release>8</maven.compiler.release>
     </properties>
     <dependencies>
         <dependency>
diff --git a/runtime/pom.xml b/runtime/pom.xml
index 93362f7..678d3a7 100644
--- a/runtime/pom.xml
+++ b/runtime/pom.xml
@@ -33,6 +33,7 @@
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
       <maven.compiler.source>1.8</maven.compiler.source>
       <maven.compiler.target>1.8</maven.compiler.target>
+      <maven.compiler.release>8</maven.compiler.release>
     </properties>
     <dependencies>
         <dependency>