diff --git a/src/ci/docker/dist-s390x-linux-netbsd/build-netbsd-toolchain.sh b/src/ci/docker/dist-s390x-linux-netbsd/build-netbsd-toolchain.sh
index 6d9728a06fd..ea335a24973 100755
--- a/src/ci/docker/dist-s390x-linux-netbsd/build-netbsd-toolchain.sh
+++ b/src/ci/docker/dist-s390x-linux-netbsd/build-netbsd-toolchain.sh
@@ -73,5 +73,11 @@ cat > /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-g++-sysroot <<'EOF'
 exec /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-g++ --sysroot=/x-tools/x86_64-unknown-netbsd/sysroot "$@"
 EOF
 
+GCC_SHA1=`sha1sum -b /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-gcc | cut -d' ' -f1`
+GPP_SHA1=`sha1sum -b /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-g++ | cut -d' ' -f1`
+
+echo "# $GCC_SHA1" >> /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-gcc-sysroot
+echo "# $GPP_SHA1" >> /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-g++-sysroot
+
 chmod +x /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-gcc-sysroot
 chmod +x /x-tools/x86_64-unknown-netbsd/bin/x86_64--netbsd-g++-sysroot