diff --git a/Dockerfile b/Dockerfile
index 76153b8..c7737e4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,12 @@
-FROM alpine:3.21.3 AS builder
+FROM alpine:3.22.0 AS builder
 
 RUN apk add --no-cache \
-	libstdc++=14.2.0-r4 \
+	libstdc++=14.2.0-r6 \
 	&& adduser --disabled-password saundersp
 
 RUN apk add --no-cache \
-	make=4.4.1-r2 \
-	g++=14.2.0-r4
+	make=4.4.1-r3 \
+	g++=14.2.0-r6
 
 USER saundersp
 
@@ -16,10 +16,10 @@ COPY *.cpp *.hpp Makefile ./
 
 RUN make -j "$(nproc)"
 
-FROM alpine:3.21.3
+FROM alpine:3.22.0
 
 RUN apk add --no-cache \
-	libstdc++=14.2.0-r4 \
+	libstdc++=14.2.0-r6 \
 	&& adduser --disabled-password saundersp
 
 USER saundersp