diff --git a/pkgs/development/tools/cmake-language-server/default.nix b/pkgs/development/tools/cmake-language-server/default.nix
index a01c0372ded9..628bb31fbe93 100644
--- a/pkgs/development/tools/cmake-language-server/default.nix
+++ b/pkgs/development/tools/cmake-language-server/default.nix
@@ -1,6 +1,7 @@
 { stdenv, buildPythonApplication, fetchFromGitHub
 , poetry, pygls, pyparsing
 , cmake, pytest, pytest-datadir
+, fetchpatch
 }:
 
 buildPythonApplication rec {
@@ -15,6 +16,12 @@ buildPythonApplication rec {
     sha256 = "0vz7bjxkk0phjhz3h9kj6yr7wnk3g7lqmkqraa0kw12mzcfck837";
   };
 
+  # can be removed after v0.1.2
+  patches = stdenv.lib.optional stdenv.isDarwin (fetchpatch {
+    url = "https://github.com/regen100/cmake-language-server/commit/0ec120f39127f25898ab110b43819e3e9becb8a3.patch";
+    sha256 = "1xbmarvsvzd61fnlap4qscnijli2rw2iqr7cyyvar2jd87z6sfp0";
+  });
+
   postPatch = ''
     substituteInPlace pyproject.toml \
       --replace 'pygls = "^0.8.1"' 'pygls = "^0.9.0"'