diff --git a/setup.py b/setup.py
index a7d06e2..8d6e414 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],
-    python_requires=">=3.7",
+    python_requires=">=3.9",
     install_requires=[
         "fsspec>=0.9.0",
         "pyslk @ git+https://gitlab.dkrz.de/hsm-tools/pyslk.git@master",