diff --git a/build.gradle.kts b/build.gradle.kts
index 61e41ae93..1d857d51c 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -230,7 +230,7 @@ tasks.getByName<Jar>("jar") {
     enabled = false
 }
 
-val supportedVersions = listOf("1.18.2", "1.19.4", "1.20.6", "1.21.1")
+val supportedVersions = listOf("1.18.2", "1.19.4", "1.20.6", "1.21.1", "1.21.3")
 tasks {
     register("cacheLatestFaweArtifact") {
         val lastSuccessfulBuildUrl = uri("https://ci.athion.net/job/FastAsyncWorldEdit/lastSuccessfulBuild/api/json").toURL()