diff --git a/docker/Dockerfile b/docker/Dockerfile
index 2adc1102..076c484d 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -9,8 +9,8 @@
 
 FROM rust:1.90-bookworm AS base
 
-# Clippy is needed at runtime for acceptance gates (cargo clippy)
-RUN rustup component add clippy
+# Clippy and rustfmt are needed at runtime for acceptance gates
+RUN rustup component add clippy rustfmt
 
 # ── System deps ──────────────────────────────────────────────────────
 RUN apt-get update && apt-get install -y --no-install-recommends \