diff --git a/functions/__kube_prompt.fish b/functions/__kube_prompt.fish
index dc2be49..25d0c26 100644
--- a/functions/__kube_prompt.fish
+++ b/functions/__kube_prompt.fish
@@ -22,10 +22,13 @@ function __kube_ps_update_cache
   end
 
   function __stat_mtime
+    # Get installed python executable
+    set python (which -a python python2 python2.7 python3 python3.6 | head -n 1)
+
     #-- cross-platform workaround; POSIX didn't specify stat(1) and so
     #-- its interface is incompatibly different on Mac OS and Linux.
     #-- see https://unix.stackexchange.com/q/561927/3097
-    python -c "print(__import__('os').stat(__import__('sys').argv[1]).st_mtime)" $argv
+    $python -c "print(__import__('os').stat(__import__('sys').argv[1]).st_mtime)" $argv
   end
 
   set -l kubeconfig "$KUBECONFIG"