diff --git a/build.gradle b/build.gradle
index a0c0d7e..78bea37 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,39 +1,3 @@
-class FilteringDependenciesExtention {
-
-    /**
-     * example for 'library':
-     * <pre>
-     * [lib: 'org.bukkit:bukkit:1.12.2-R0.1-SNAPSHOT',
-     * exclude: [
-     *   'com.google.code.gson:gson',
-     *   'com.googlecode.json-simple:json-simple'
-     * ]]
-     * </pre>
-     *
-     * @param library see example
-     */
-    def filter(library) {
-        Object[] result = new Object[2]
-        result[0] = library.lib
-        result[1] = {
-            library.exclude.each { String excludeLibStr ->
-                String[] excludeLib = excludeLibStr.split(':')
-                exclude group: excludeLib[0], module: excludeLib[1]
-            }
-        }
-
-        return result
-    }
-}
-
-class FilteringDependenciesPlugin implements Plugin<Project> {
-
-    @Override
-    void apply(Project target) {
-        target.extensions.create('fildep', FilteringDependenciesExtention)
-    }
-}
-
 plugins {
     id 'java'
 }
diff --git a/buildSrc/src/main/groovy/FilteringDependenciesExtention.groovy b/buildSrc/src/main/groovy/FilteringDependenciesExtention.groovy
new file mode 100644
index 0000000..9cec6a2
--- /dev/null
+++ b/buildSrc/src/main/groovy/FilteringDependenciesExtention.groovy
@@ -0,0 +1,27 @@
+class FilteringDependenciesExtention {
+
+    /**
+     * example for 'library':
+     * <pre>
+     * [lib: 'org.bukkit:bukkit:1.12.2-R0.1-SNAPSHOT',
+     * exclude: [
+     *   'com.google.code.gson:gson',
+     *   'com.googlecode.json-simple:json-simple'
+     * ]]
+     * </pre>
+     *
+     * @param library see example
+     */
+    def filter(library) {
+        Object[] result = new Object[2]
+        result[0] = library.lib
+        result[1] = {
+            library.exclude.each { String excludeLibStr ->
+                String[] excludeLib = excludeLibStr.split(':')
+                exclude group: excludeLib[0], module: excludeLib[1]
+            }
+        }
+
+        return result
+    }
+}
diff --git a/buildSrc/src/main/groovy/FilteringDependenciesPlugin.groovy b/buildSrc/src/main/groovy/FilteringDependenciesPlugin.groovy
new file mode 100644
index 0000000..5aa04b7
--- /dev/null
+++ b/buildSrc/src/main/groovy/FilteringDependenciesPlugin.groovy
@@ -0,0 +1,10 @@
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+
+class FilteringDependenciesPlugin implements Plugin<Project> {
+
+    @Override
+    void apply(Project target) {
+        target.extensions.create('fildep', FilteringDependenciesExtention)
+    }
+}