diff --git a/backend/docker/Dockerfile.dev b/backend/docker/Dockerfile.dev
index 9b578cd..c9e6cf1 100644
--- a/backend/docker/Dockerfile.dev
+++ b/backend/docker/Dockerfile.dev
@@ -1,7 +1,8 @@
 FROM rust:1.83-alpine
 WORKDIR /app
 RUN apk add --no-cache musl-dev pkgconf openssl-dev curl wget git pkgconfig
-RUN cargo install cargo-watch
+# Pin cargo-watch to version 8.4.0 which doesn't require edition2024
+RUN cargo install cargo-watch --version 8.4.0
 COPY Cargo.toml ./
 RUN mkdir src && echo 'fn main() {}' > src/main.rs
 RUN cargo build && rm -rf src