diff --git a/share/functions/fish_update_completions.fish b/share/functions/fish_update_completions.fish
index 0fb007983..136927356 100644
--- a/share/functions/fish_update_completions.fish
+++ b/share/functions/fish_update_completions.fish
@@ -1,4 +1,11 @@
 function fish_update_completions --description "Update man-page based completions"
     # Clean up old paths
-    python -B $__fish_datadir/tools/create_manpage_completions.py --manpath --progress --cleanup-in '~/.config/fish/completions' --cleanup-in '~/.config/fish/generated_completions'
+    set -l update_args -B $__fish_datadir/tools/create_manpage_completions.py --manpath --cleanup-in '~/.config/fish/completions' --cleanup-in '~/.config/fish/generated_completions' --progress
+    if command -qs python3
+        python3 $update_args
+    else if command -qs python2
+        python2 $update_args
+    else if command -qs python
+        python $update_args
+    end
 end