diff --git a/requirements.txt b/requirements.txt
index db62b80a4..d0a269ba9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,4 @@ pytest
 wkw==0.0.6
 requests
 black
-cluster_tools==1.34
+cluster_tools==1.36
diff --git a/setup.py b/setup.py
index 24610e812..230ae5dfb 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
     packages=find_packages(exclude=("tests",)),
     use_scm_version=True,
     setup_requires=['setuptools_scm'],
-    install_requires=["scipy", "numpy", "pillow", "pyyaml", "wkw", "cluster_tools==1.34"],
+    install_requires=["scipy", "numpy", "pillow", "pyyaml", "wkw", "cluster_tools==1.36"],
     description="A cubing tool for webKnossos",
     author="Norman Rzepka",
     author_email="norman.rzepka@scalableminds.com",