diff --git a/Dockerfile b/Dockerfile
index bf2153d..edc6e97 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-# syntax=docker/dockerfile:1.25.0
+# syntax=docker/dockerfile:1.26.0
 FROM koalaman/shellcheck-alpine:v0.11.0 AS shellcheck
 WORKDIR /src
 RUN --mount=type=bind,target=. \