diff --git a/entries/gb-basic/game.json b/entries/gb-basic/game.json
index d786957c..32b54f24 100644
--- a/entries/gb-basic/game.json
+++ b/entries/gb-basic/game.json
@@ -11,6 +11,10 @@
             "description": "release (2.10)",
             "filename": "gbb210.zip"
         },
+        {
+            "description": "release (1.21)",
+            "filename": "gbb121.zip"
+        },
         {
             "description": "release (1.08)",
             "filename": "gbb108.zip"
@@ -27,4 +31,4 @@
     "slug": "gb-basic",
     "title": "GB Basic",
     "typetag": "tool"
-}
\ No newline at end of file
+}
diff --git a/entries/gb-basic/gbb121.zip b/entries/gb-basic/gbb121.zip
new file mode 100644
index 00000000..572058c4
Binary files /dev/null and b/entries/gb-basic/gbb121.zip differ