diff --git a/conanfile.py b/conanfile.py
index 906ba04e9b3920f3d5d13d6bc568b0dd7c67696b..ebd8fcf2950b203f33e0c3ada5181cf0bf4502ac 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -23,6 +23,7 @@ class CaosdbConan(ConanFile):
     generators = "cmake"
     requires = [
         ("grpc/1.48.0"),
+        ("zlib/1.3.1")
     ]
     build_requires = [
         ("boost/1.78.0"),