diff --git a/Dockerfile b/Dockerfile
index d901827..07c5525 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM rust:1.74-alpine3.18 AS compiler
+FROM rust:1.74-alpine3.18@sha256:e6e45a7d5d8b7acb2a2915a35c4b12868b6cc089da61f4fbbb719673f2fcd60c AS compiler
 ENV RUSTFLAGS="-C target-feature=-crt-static"
 RUN apk add --no-cache openssl-dev musl-dev 
 WORKDIR /usr/src/rustbot
@@ -6,7 +6,7 @@ RUN cargo build || true
 COPY . .
 RUN cargo fetch && cargo build -r
 
-FROM alpine:3.19
+FROM alpine:3.19@sha256:51b67269f354137895d43f3b3d810bfacd3945438e94dc5ac55fdac340352f48
 RUN apk add --no-cache openssl-dev libgcc
 WORKDIR /rustbot
 COPY --from=compiler /usr/src/rustbot/target/release/rustbot .