diff --git a/docker/Dockerfile b/docker/Dockerfile
index 7149e5e..32c09ab 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -9,6 +9,9 @@
 
 FROM rust:1.90-bookworm AS base
 
+# Clippy is needed at runtime for acceptance gates (cargo clippy)
+RUN rustup component add clippy
+
 # ── System deps ──────────────────────────────────────────────────────
 RUN apt-get update && apt-get install -y --no-install-recommends \
         git \