diff --git a/scripts/update-docs.sh b/scripts/update-docs.sh
index e827413a4..b64baf394 100755
--- a/scripts/update-docs.sh
+++ b/scripts/update-docs.sh
@@ -3,5 +3,5 @@
 # exit when any command fails
 set -e
 
-cog -r website/index.md
-cog -r website/docs/usage.md
+cog $ARG website/index.md
+cog $ARG website/docs/usage.md