diff --git a/pom-pack17.xml b/pom-pack17.xml
index 671dd75..ba750a6 100644
--- a/pom-pack17.xml
+++ b/pom-pack17.xml
@@ -77,7 +77,7 @@
       <plugin>
         <groupId>com.github.wvengen</groupId>
         <artifactId>proguard-maven-plugin</artifactId>
-        <version>2.5.3</version>
+        <version>2.6.1</version>
         <executions>
           <execution>
             <phase>package</phase>
@@ -92,10 +92,10 @@
             <option>-keepattributes Signature,InnerClasses</option>
             <option>-keep public class com.github.underscore.Underscore { *; }</option>
             <option>-keep public class com.github.underscore.*$Chain { *; }</option>
-            <option>-keep public class com.github.underscore.Underscore.Function3 { *; }</option>
-            <option>-keep public class com.github.underscore.Underscore.MemoizeFunction { *; }</option>
-            <option>-keep public class com.github.underscore.Underscore.PredicateIndexed { *; }</option>
-            <option>-keep public class com.github.underscore.Underscore.Template { *; }</option>
+            <option>-keep public class com.github.underscore.Underscore$Function3 { *; }</option>
+            <option>-keep public class com.github.underscore.Underscore$MemoizeFunction { *; }</option>
+            <option>-keep public class com.github.underscore.Underscore$PredicateIndexed { *; }</option>
+            <option>-keep public class com.github.underscore.Underscore$Template { *; }</option>
             <option>-keep public class com.github.underscore.Base32 { *; }</option>
             <option>-keep public class com.github.underscore.Json { *; }</option>
             <option>-keep public class com.github.underscore.U { *; }</option>