diff --git a/pom.xml b/pom.xml
index c8bc2c78..3ace1b00 100644
--- a/pom.xml
+++ b/pom.xml
@@ -65,8 +65,8 @@ DO NOT MODIFY - GENERATED CODE
     <invoker.test>${bc.versions}</invoker.test>
     <jruby.plugins.version>3.0.2</jruby.plugins.version>
     <jruby.switches>-W0</jruby.switches>
-    <jruby.version>9.2.19.0</jruby.version>
-    <jruby.versions>9.2.19.0</jruby.versions>
+    <jruby.version>9.1.17.0</jruby.version>
+    <jruby.versions>9.1.17.0</jruby.versions>
     <mavengem-wagon.version>2.0.2</mavengem-wagon.version>
     <mavengem.wagon.version>2.0.2</mavengem.wagon.version>
     <polyglot.dump.pom>pom.xml</polyglot.dump.pom>
@@ -274,7 +274,6 @@ DO NOT MODIFY - GENERATED CODE
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
-          <release>8</release>
           <encoding>UTF-8</encoding>
           <debug>true</debug>
           <showWarnings>true</showWarnings>