diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 7350bb2a..e039ea58 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -819,6 +819,9 @@ Groovy:
   color: "#e69f56"
   extensions:
   - .groovy
+  - .gtpl
+  - .grt
+  - .gvy
   interpreters:
   - groovy