diff --git a/debian-armv6 b/debian-armv6
index d4f9549..f5e2866 100644
--- a/debian-armv6
+++ b/debian-armv6
@@ -60,15 +60,15 @@ RUN $APT_INSTALL \
     libraspberrypi-dev \
     libglib2.0-dev
 
-# install cmake on debian buster from buster-backports
-RUN if [ "$SUITE" = "buster" ]; then \
-    echo "deb http://deb.debian.org/debian buster-backports main contrib non-free" > /etc/apt/sources.list.d/buster-backports-sources.list; \
-    apt-key adv --keyserver keyserver.ubuntu.com  --recv-key 0E98404D386FA1D9 6ED0E7B82643E131; \
-    $APT_UPDATE && $APT_INSTALL -t buster-backports cmake; \
-    rm /etc/apt/sources.list.d/buster-backports-sources.list; \
-else \
-    $APT_INSTALL cmake; \
-fi
+# install latest cmake
+ARG CMAKE_VERSION=3.28.1
+ARG CMAKE_VERSION_DOT=v3.28
+RUN set -ex \
+    && CMAKE_BUILD_DIR=$(mktemp -d) \
+    && trap "rm -rf $CMAKE_BUILD_DIR" EXIT \
+    && cd $CMAKE_BUILD_DIR && curl -sL https://cmake.org/files/${CMAKE_VERSION_DOT}/cmake-${CMAKE_VERSION}.tar.gz -o cmake.tar.gz \
+    && tar xf cmake.tar.gz --strip-components 1 \
+    && ./configure && make && make install
 
 # download qemu and set exec flag
 RUN curl -kL https://github.com/balena-io/qemu/releases/download/v7.0.0%2Bbalena1/qemu-7.0.0.balena1-arm.tar.gz | tar zxvf - -C . --strip-components 1 && mv qemu-arm-static /usr/bin/qemu-static && chmod +x /usr/bin/qemu-static