diff --git a/build.gradle b/build.gradle
index c085be0..631cdd1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,6 +8,7 @@ group "io.github.gpc"
 apply plugin: 'java-library'
 apply plugin: "org.apache.grails.gradle.grails-plugin"
 apply plugin: 'org.apache.grails.gradle.grails-publish'
+apply plugin: "org.apache.grails.gradle.grails-gsp"
 
 ext {
     buildInstant = java.util.Optional.ofNullable(System.getenv("SOURCE_DATE_EPOCH"))