diff --git a/tools/libint/Dockerfile b/tools/libint/Dockerfile
index c4c43a9c05..89f5a787c6 100644
--- a/tools/libint/Dockerfile
+++ b/tools/libint/Dockerfile
@@ -9,7 +9,8 @@ RUN apt-get install -qq --no-install-recommends \
     libgmp-dev \
     libboost-dev \
     make \
-    wget
+    wget \
+    xz-utils
 
 WORKDIR /opt
 COPY ./build_bundles.sh .
diff --git a/tools/libint/build_bundles.sh b/tools/libint/build_bundles.sh
index 644d164f59..10a75b1491 100755
--- a/tools/libint/build_bundles.sh
+++ b/tools/libint/build_bundles.sh
@@ -32,7 +32,8 @@ for lmax in 4 5 6 7; do
     -DLIBINT2_ENABLE_FORTRAN=ON \
     -DLIBINT2_ENABLE_UNROLLING=0 &> cmake.log
   make export -j 32 &> build.log
-  cp -v ./libint-2.13.1-post999.tgz "/opt/libint-bundles/libint-v${libint_ver}-cp2k-lmax-${lmax}.tgz"
+  mv -f ./libint-2.13.1-post999 ./libint-v${libint_ver}-cp2k-lmax-${lmax}
+  tar -cJf "/opt/libint-bundles/libint-v${libint_ver}-cp2k-lmax-${lmax}.tar.xz" ./libint-v${libint_ver}-cp2k-lmax-${lmax}
   cd ..
 done