diff --git a/kernel/Dockerfile.kconfig b/kernel/Dockerfile.kconfig
index 78a56c12a..fbd9e282c 100644
--- a/kernel/Dockerfile.kconfig
+++ b/kernel/Dockerfile.kconfig
@@ -4,8 +4,8 @@ RUN apk add \
     build-base \
     curl \
     diffutils \
+    libarchive-tools \
     ncurses-dev \
-    tar \
     xz
 
 ARG KERNEL_VERSIONS
@@ -17,7 +17,7 @@ RUN set -e && for VERSION in ${KERNEL_VERSIONS}; do \
         echo "Downloading/Unpacking $VERSION" && \
         KERNEL_SOURCE=https://www.kernel.org/pub/linux/kernel/v4.x/linux-${VERSION}.tar.xz && \
         [ -f sources/linux-${VERSION}.tar.xz ] || curl -fSLo sources/linux-${VERSION}.tar.xz ${KERNEL_SOURCE} && \
-        tar xf sources/linux-${VERSION}.tar.xz; \
+        bsdtar xf sources/linux-${VERSION}.tar.xz; \
     done
 
 # Apply patches to all kernels and move config files into place