diff --git a/entrypoint.sh b/entrypoint.sh
index 9d0f2b5..c62f402 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -9,7 +9,7 @@ set -eu
 
 # Variables.
 SWITCHES="$INPUT_SWITCHES"
-RSH="ssh -o StrictHostKeyChecking=no -p $INPUT_REMOTE_PORT $INPUT_RSH"
+RSH="ssh -o StrictHostKeyChecking=no -o HostKeyAlgorithms=+ssh-rsa -o PubkeyAcceptedKeyTypes=+ssh-rsa -p $INPUT_REMOTE_PORT $INPUT_RSH"
 LOCAL_PATH="$GITHUB_WORKSPACE/$INPUT_PATH"
 DSN="$INPUT_REMOTE_USER@$INPUT_REMOTE_HOST"