diff --git a/pkgs/development/python-modules/crownstone-cloud/default.nix b/pkgs/development/python-modules/crownstone-cloud/default.nix
index 632f0812f00e..86b77b994ea7 100644
--- a/pkgs/development/python-modules/crownstone-cloud/default.nix
+++ b/pkgs/development/python-modules/crownstone-cloud/default.nix
@@ -3,6 +3,7 @@
 , asynctest
 , buildPythonPackage
 , fetchFromGitHub
+, fetchpatch
 , certifi
 , pythonOlder
 , pytestCheckHook
@@ -18,10 +19,19 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "crownstone";
     repo = "crownstone-lib-python-cloud";
-    rev = version;
-    sha256 = "sha256-CS1zeQiWPnsGCWixCsN9sz08mPORW5sVqIpSFPh0Qt0=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-CS1zeQiWPnsGCWixCsN9sz08mPORW5sVqIpSFPh0Qt0=";
   };
 
+  patches = [
+    # Remove asynctest, https://github.com/crownstone/crownstone-lib-python-cloud/pull/4
+    (fetchpatch {
+      name = "remove-asynctest.patch";
+      url = "https://github.com/crownstone/crownstone-lib-python-cloud/commit/7f22c9b284bf8d7f6f43e205816787dd3bb37e78.patch";
+      hash = "sha256-LS1O9LVB14WyBXfuHf/bs1juJ59zWhJ8pL4aGtVrTG8=";
+    })
+  ];
+
   propagatedBuildInputs = [
     aiohttp
     asynctest