diff --git a/instrumentation/grails-1.3/build.gradle b/instrumentation/grails-1.3/build.gradle
deleted file mode 100644
index b616a0d460..0000000000
--- a/instrumentation/grails-1.3/build.gradle
+++ /dev/null
@@ -1,23 +0,0 @@
-
-dependencies {
-    implementation(project(":agent-bridge"))
-    implementation("org.grails:grails-web:1.3.7")
-    implementation("javax.servlet:servlet-api:2.4")
-    implementation("org.springframework:spring-webmvc:3.0.5.RELEASE")
-}
-
-jar {
-    manifest { attributes 'Implementation-Title': 'com.newrelic.instrumentation.grails-1.3' }
-}
-
-verifyInstrumentation {
-    excludeRegex '.*.RC[0-9]'
-    excludeRegex '.*.M[0-9]'
-    passes 'org.grails:grails-web:[1.3.0,2.0)'
-    fails 'org.grails:grails-web:[2.0,)'
-}
-
-site {
-    title 'Grails'
-    type 'Framework'
-}
\ No newline at end of file
diff --git a/instrumentation/grails-1.3/src/main/java/org/codehaus/groovy/grails/web/servlet/mvc/GrailsControllerHelper.java b/instrumentation/grails-1.3/src/main/java/org/codehaus/groovy/grails/web/servlet/mvc/GrailsControllerHelper.java
deleted file mode 100644
index c86c5798ad..0000000000
--- a/instrumentation/grails-1.3/src/main/java/org/codehaus/groovy/grails/web/servlet/mvc/GrailsControllerHelper.java
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- *
- *  * Copyright 2020 New Relic Corporation. All rights reserved.
- *  * SPDX-License-Identifier: Apache-2.0
- *
- */
-
-package org.codehaus.groovy.grails.web.servlet.mvc;
-
-import org.springframework.web.servlet.ModelAndView;
-
-import com.newrelic.api.agent.NewRelic;
-import com.newrelic.api.agent.Trace;
-import com.newrelic.api.agent.TransactionNamePriority;
-import com.newrelic.api.agent.weaver.MatchType;
-import com.newrelic.api.agent.weaver.Weave;
-import com.newrelic.api.agent.weaver.Weaver;
-
-@Weave(type = MatchType.Interface)
-public abstract class GrailsControllerHelper {
-
-    @Trace
-    public ModelAndView handleURI(String uri, GrailsWebRequest webRequest) {
-        NewRelic.getAgent().getTransaction().setTransactionName(TransactionNamePriority.FRAMEWORK_HIGH, true,
-                "GrailsController", webRequest.getControllerName(), "/", webRequest.getActionName());
-        return Weaver.callOriginal();
-    }
-}
diff --git a/settings.gradle b/settings.gradle
index 98de464c6d..02d23a3268 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -126,7 +126,6 @@ include 'instrumentation:glassfish-3'
 include 'instrumentation:glassfish-6'
 include 'instrumentation:glassfish-jmx'
 include 'instrumentation:glassfish-jul-extension-7'
-include 'instrumentation:grails-1.3'
 include 'instrumentation:grails-2'
 include 'instrumentation:grails-async-2.3'
 include 'instrumentation:graphql-java-16.2'