diff --git a/pom.xml b/pom.xml
index fe275d3a8..b904ec3bd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -59,8 +59,6 @@
     <commons.encoding>UTF-8</commons.encoding>
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
-    <math.pmd.version>3.14.0</math.pmd.version>
-    <math.pmd.dep.version>6.37.0</math.pmd.dep.version>
     <math.mathjax.version>2.7.2</math.mathjax.version>
     <math.commons.numbers.version>1.1-SNAPSHOT</math.commons.numbers.version>
     <math.commons.rng.version>1.5</math.commons.rng.version>
@@ -354,19 +352,6 @@
       </plugin>
       <plugin>
         <artifactId>maven-pmd-plugin</artifactId>
-        <version>${math.pmd.version}</version>
-        <dependencies>
-          <dependency>
-            <groupId>net.sourceforge.pmd</groupId>
-            <artifactId>pmd-core</artifactId>
-            <version>${math.pmd.dep.version}</version>
-          </dependency>
-          <dependency>
-            <groupId>net.sourceforge.pmd</groupId>
-            <artifactId>pmd-java</artifactId>
-            <version>${math.pmd.dep.version}</version>
-          </dependency>
-        </dependencies>
         <configuration>
           <printFailingErrors>true</printFailingErrors>
           <!-- TODO: remove this when PMD has been fixed. -->
@@ -542,7 +527,6 @@
       </plugin>
       <plugin>
         <artifactId>maven-pmd-plugin</artifactId>
-        <version>${math.pmd.version}</version>
         <configuration>
           <verbose>false</verbose>
           <printFailingErrors>true</printFailingErrors>