diff --git a/conan-install.sh b/conan-install.sh
index 4e3ed734c347199e5ce05e76fd3fbaf5803d923c..44160139c51beb75f9245b4c7c63f13be7d7a89b 100755
--- a/conan-install.sh
+++ b/conan-install.sh
@@ -2,6 +2,8 @@
 
 DIR=$(readlink -f $(dirname $0))
 
+echo "using `conan --version`"
+
 if ! conan profile show corsika8 >/dev/null 2>/dev/null; then
   conan profile new --detect corsika8
   conan profile update settings.compiler.cppstd=17 corsika8
diff --git a/conanfile.txt b/conanfile.txt
index d7e6ade75ac6162e8af92dc27a1b458f54208503..400b978cf35f2419766039e8aec6515df10add32 100644
--- a/conanfile.txt
+++ b/conanfile.txt
@@ -3,7 +3,7 @@ spdlog/1.9.2
 catch2/2.13.8
 eigen/3.3.8
 boost/1.78.0
-zlib/1.2.11
+zlib/1.2.13
 proposal/7.4.2
 yaml-cpp/0.7.0
 arrow/10.0.0