diff --git a/Containerfile b/Containerfile
index 87a0e7f..4566a46 100644
--- a/Containerfile
+++ b/Containerfile
@@ -1,4 +1,4 @@
-FROM docker.io/rust:1-alpine3.20 AS builder
+FROM docker.io/rust:1-alpine3.21 AS builder
 
 RUN apk --no-cache add \
   git \
@@ -13,7 +13,7 @@ ENV CARGO_BUILD_RUSTFLAGS="-C target-feature=+crt-static"
 RUN echo "atuin:x:2222:2222:Linux User,,,:/atuin:/atuin" > /passwd
 RUN mkdir /atuin
 
-ENV VERSION=v18.3.0
+ENV VERSION=v18.4.0
 
 RUN git clone https://github.com/atuinsh/atuin.git /work
 WORKDIR /work