diff --git a/pkgs/development/python-modules/pymilvus/default.nix b/pkgs/development/python-modules/pymilvus/default.nix
index 61d3ae31cb98..c9f706ca4a95 100644
--- a/pkgs/development/python-modules/pymilvus/default.nix
+++ b/pkgs/development/python-modules/pymilvus/default.nix
@@ -21,7 +21,7 @@
 
 buildPythonPackage rec {
   pname = "pymilvus";
-  version = "2.4.7";
+  version = "2.3.6";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
@@ -30,7 +30,7 @@ buildPythonPackage rec {
     owner = "milvus-io";
     repo = "pymilvus";
     rev = "refs/tags/v${version}";
-    hash = "sha256-z4Gg9TCiIwcDxnsEDyafsoMjmPYxLjg1XWH41rTA3nU=";
+    hash = "sha256-K7k3MTOEm9+HDwMps9C8Al0Jmp1ptJw3pN1LEBOUz0U=";
   };
 
   pythonRelaxDeps = [