diff --git a/Tools/GAMS/build b/Tools/GAMS/build
index b961793..595506c 100755
--- a/Tools/GAMS/build
+++ b/Tools/GAMS/build
@@ -1,7 +1,5 @@
 #!/usr/bin/env modbuild
 
-pbuild::add_to_group 'Tools'
-
 pbuild::prep() {
 	:
 }
diff --git a/Tools/GAMS/files/config.yaml b/Tools/GAMS/files/config.yaml
new file mode 100644
index 0000000..c38ccba
--- /dev/null
+++ b/Tools/GAMS/files/config.yaml
@@ -0,0 +1,27 @@
+format: 1
+GAMS:
+  defaults:
+    group: Tools
+    relstage: stable
+  shasums:
+  versions:
+    50.3.0:
+      variants:
+        - relstage: stable
+          overlay: merlin
+          use_overlays: [PSI]
+    42.3.0:
+      variants:
+        - relstage: stable
+          overlay: merlin
+          use_overlays: [PSI]
+    31.1.1:
+      variants:
+        - relstage: deprecated
+          overlay: merlin
+          use_overlays: [PSI]
+    30.3.0:
+      variants:
+        - relstage: deprecated 
+          overlay: merlin
+          use_overlays: [PSI]