diff --git a/Dockerfile b/Dockerfile
index 1d5c714..63d6971 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,9 @@
-FROM alpine:3.21
+FROM alpine:3.22
 COPY . .
 RUN apk add --no-cache gcc musl-dev && \
   gcc -shared -fPIC -Wall -Wextra -Werror numcpu_override.c -o numcpu_override.so -ldl
 
-FROM alpine:3.21
+FROM alpine:3.22
 COPY /copy.sh /
 COPY --from=0 numcpu_override.so /
 ENTRYPOINT ["/copy.sh"]
diff --git a/Dockerfile.debian b/Dockerfile.debian
index e1a53b2..4c428f5 100644
--- a/Dockerfile.debian
+++ b/Dockerfile.debian
@@ -3,7 +3,7 @@ COPY . .
 RUN apt update && apt install -y gcc && \
   gcc -shared -fPIC -Wall -Wextra -Werror numcpu_override.c -o numcpu_override.so -ldl
 
-FROM alpine:3.21
+FROM alpine:3.22
 COPY /copy.sh /
 COPY --from=0 numcpu_override.so /
 ENTRYPOINT ["/copy.sh"]