diff --git a/images/macos/toolsets/toolset-15.json b/images/macos/toolsets/toolset-15.json
index 39bfc1a92..631d22785 100644
--- a/images/macos/toolsets/toolset-15.json
+++ b/images/macos/toolsets/toolset-15.json
@@ -24,7 +24,7 @@
                     "version": "26.0.1+17A400",
                     "symlinks": ["26.0"],
                     "sha256": "9881c457068c86ac91e94cca2d7116dfd01cb7179c22b0863b63c7f3bb7e7695",
-                    "install_runtimes": "default"
+                    "install_runtimes": "none"
                 },
                 {
                     "link": "16.4",
@@ -91,7 +91,7 @@
                     "version": "26.0.1+17A400",
                     "symlinks": ["26.0"],
                     "sha256": "9881c457068c86ac91e94cca2d7116dfd01cb7179c22b0863b63c7f3bb7e7695",
-                    "install_runtimes": "default"
+                    "install_runtimes": "none"
                 },
                 {
                     "link": "16.4",