diff --git a/libraries-4/pom.xml b/libraries-4/pom.xml
index 1b2db27861..f26e7fc055 100644
--- a/libraries-4/pom.xml
+++ b/libraries-4/pom.xml
@@ -88,6 +88,11 @@
             <artifactId>javax.el-api</artifactId>
             <version>${javax.el.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.glassfish.web</groupId>
+            <artifactId>javax.el</artifactId>
+            <version>2.2.4</version>
+        </dependency>
     </dependencies>
 
     <properties>
diff --git a/libraries-5/pom.xml b/libraries-5/pom.xml
index 41c92e54c3..63296d4a89 100644
--- a/libraries-5/pom.xml
+++ b/libraries-5/pom.xml
@@ -43,12 +43,12 @@
         <!-- https://mvnrepository.com/artifact/com.typesafe.akka/akka-actor -->
         <dependency>
             <groupId>com.typesafe.akka</groupId>
-            <artifactId>akka-actor_2.12</artifactId>
+            <artifactId>akka-actor_${scala.version}</artifactId>
             <version>${typesafe-akka.version}</version>
         </dependency>
         <dependency>
             <groupId>com.typesafe.akka</groupId>
-            <artifactId>akka-testkit_2.12</artifactId>
+            <artifactId>akka-testkit_${scala.version}</artifactId>
             <version>${typesafe-akka.version}</version>
             <scope>test</scope>
 
@@ -130,7 +130,8 @@
         <jool.version>0.9.12</jool.version>
         <spring.version>4.3.8.RELEASE</spring.version>
         <assertj.version>3.6.2</assertj.version>
-        <typesafe-akka.version>2.5.26</typesafe-akka.version>
+        <scala.version>2.11</scala.version>
+        <typesafe-akka.version>2.5.11</typesafe-akka.version>
         <streamex.version>0.6.5</streamex.version>
         <bytebuddy.version>1.7.1</bytebuddy.version>
         <docker.version>3.0.14</docker.version>