diff --git a/pkgs/development/python-modules/pgmpy/default.nix b/pkgs/development/python-modules/pgmpy/default.nix
index 6e9f962c60bd..80d79d8978f5 100644
--- a/pkgs/development/python-modules/pgmpy/default.nix
+++ b/pkgs/development/python-modules/pgmpy/default.nix
@@ -27,14 +27,14 @@
 }:
 buildPythonPackage rec {
   pname = "pgmpy";
-  version = "0.1.26";
+  version = "1.0.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pgmpy";
     repo = "pgmpy";
     tag = "v${version}";
-    hash = "sha256-RusVREhEXYaJuQXTaCQ7EJgbo4+wLB3wXXCAc3sBGtU=";
+    hash = "sha256-WmRtek3lN7vEfXqoaZDiaNjMQ7R2PmJ/OEwxOV7m5sE=";
   };
 
   dependencies = [
@@ -78,7 +78,7 @@ buildPythonPackage rec {
   meta = {
     description = "Python Library for learning (Structure and Parameter), inference (Probabilistic and Causal), and simulations in Bayesian Networks";
     homepage = "https://github.com/pgmpy/pgmpy";
-    changelog = "https://github.com/pgmpy/pgmpy/releases/tag/v${version}";
+    changelog = "https://github.com/pgmpy/pgmpy/releases/tag/${src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ happysalada ];
   };