diff --git a/Dockerfile b/Dockerfile
index e191bbe..c8047db 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -46,7 +46,7 @@ RUN wget "$OVERMIND_URL" && gunzip ${OVERMIND_FILE} && chmod +x "$OVERMIND"
 #
 # Fly app
 #
-FROM caddy:2.7.6-alpine
+FROM caddy:2.9.1-alpine
 
 ARG SUPERCRONIC
 ARG OVERMIND