diff --git a/ctl b/ctl
index 3cd0f6c..fd00a02 100755
--- a/ctl
+++ b/ctl
@@ -58,7 +58,7 @@ else
     fi
     if [ $SYSTEM == "Darwin" ]; then
         PLATFORM="darwin64"
-        PLATFORM_PYTHON=3.5
+        PLATFORM_PYTHON=3.7
     fi
     export PLATFORM_ENV="$BASE/platform_${PLATFORM}"
 fi