diff --git a/extensions/database/pom.xml b/extensions/database/pom.xml
index b57824ce2..4f55ac062 100644
--- a/extensions/database/pom.xml
+++ b/extensions/database/pom.xml
@@ -45,7 +45,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
diff --git a/extensions/gdata/pom.xml b/extensions/gdata/pom.xml
index caa1c1f4f..703697667 100644
--- a/extensions/gdata/pom.xml
+++ b/extensions/gdata/pom.xml
@@ -45,7 +45,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
diff --git a/extensions/jython/pom.xml b/extensions/jython/pom.xml
index 03611c3c8..13f60a4c7 100644
--- a/extensions/jython/pom.xml
+++ b/extensions/jython/pom.xml
@@ -47,7 +47,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
diff --git a/extensions/pc-axis/pom.xml b/extensions/pc-axis/pom.xml
index 89d382c14..399c03592 100644
--- a/extensions/pc-axis/pom.xml
+++ b/extensions/pc-axis/pom.xml
@@ -45,7 +45,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
diff --git a/extensions/phonetic/pom.xml b/extensions/phonetic/pom.xml
index b3b0635e1..5303c0ae6 100644
--- a/extensions/phonetic/pom.xml
+++ b/extensions/phonetic/pom.xml
@@ -47,7 +47,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
diff --git a/extensions/wikidata/pom.xml b/extensions/wikidata/pom.xml
index 97a9d79a8..87cf1056b 100644
--- a/extensions/wikidata/pom.xml
+++ b/extensions/wikidata/pom.xml
@@ -55,7 +55,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
diff --git a/main/pom.xml b/main/pom.xml
index eef613abd..16d6ea685 100644
--- a/main/pom.xml
+++ b/main/pom.xml
@@ -62,7 +62,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.8.0</version>
+        <version>3.8.1</version>
         <configuration>
 	  <!--release>11</release-->
           <encoding>UTF-8</encoding>
diff --git a/pom.xml b/pom.xml
index 3fc3daed6..1e45cb4fa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -92,7 +92,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
diff --git a/server/pom.xml b/server/pom.xml
index ad2f495be..5ac253bee 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -55,7 +55,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.8.1</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>