diff --git a/projects/okernel/Dockerfile.okernel b/projects/okernel/Dockerfile.okernel
index 5fbd9044d..291587b65 100644
--- a/projects/okernel/Dockerfile.okernel
+++ b/projects/okernel/Dockerfile.okernel
@@ -1,4 +1,4 @@
-FROM linuxkit/alpine:a120ad6aead3fe583eaa20e9b75a05ac1b3487da AS kernel-build
+FROM linuxkit/alpine:21f2d52a0e20a78a0a81bbf5bebc652a3ec21b01 AS kernel-build
 RUN apk --no-cache add \
     argp-standalone \
     automake \
@@ -18,10 +18,9 @@ RUN apk --no-cache add \
     tar \
     xz \
     zlib-dev \
+    openssl \
     openssl-dev
 
-RUN apk --no-cache add --repository http://dl-cdn.alpinelinux.org/alpine/edge/main openssl
-
 ARG KERNEL_VERSION
 ARG DEBUG=0