diff --git a/images/macos/toolsets/toolset-10.15.json b/images/macos/toolsets/toolset-10.15.json
index 8497a710..f834385c 100644
--- a/images/macos/toolsets/toolset-10.15.json
+++ b/images/macos/toolsets/toolset-10.15.json
@@ -19,35 +19,35 @@
         "android-versions": [
             "11.0.2.0", "10.3.1.4", "10.2.0.100", "10.1.3.7", "10.0.6.2"
         ],
-        "bundle-default": "latest",
+        "bundle-default": "6_12_0",
         "bundles": [
             {
                 "symlink": "6_12_1",
                 "mono":"6.12",
                 "ios": "14.0",
                 "mac": "6.20",
-                "android": "11.0" 
+                "android": "11.0"
             },
             {
                 "symlink": "6_12_0",
                 "mono":"6.12",
                 "ios": "13.20",
                 "mac": "6.20",
-                "android": "11.0" 
+                "android": "11.0"
             },
             {
                 "symlink": "6_10_0",
                 "mono":"6.10",
                 "ios": "13.18",
                 "mac": "6.18",
-                "android": "10.3" 
+                "android": "10.3"
             },
             {
                 "symlink": "6_8_1",
                 "mono":"6.8",
                 "ios": "13.16",
                 "mac": "6.16",
-                "android": "10.2" 
+                "android": "10.2"
             },
             {
                 "symlink": "6_8_0",
diff --git a/images/macos/toolsets/toolset-11.0.json b/images/macos/toolsets/toolset-11.0.json
index 725da218..f4e9a57c 100644
--- a/images/macos/toolsets/toolset-11.0.json
+++ b/images/macos/toolsets/toolset-11.0.json
@@ -19,21 +19,21 @@
         "android-versions": [
             "11.0.2.0"
         ],
-        "bundle-default": "latest",
+        "bundle-default": "6_12_0",
         "bundles": [
             {
                 "symlink": "6_12_1",
                 "mono":"6.12",
                 "ios": "14.0",
                 "mac": "6.20",
-                "android": "11.0" 
+                "android": "11.0"
             },
             {
                 "symlink": "6_12_0",
                 "mono":"6.12",
                 "ios": "13.20",
                 "mac": "6.20",
-                "android": "11.0" 
+                "android": "11.0"
             }
         ]
     },