diff --git a/pkgs/development/python-modules/jianpu-ly/default.nix b/pkgs/development/python-modules/jianpu-ly/default.nix
index 00d1d7e3e34d..42e2448a5279 100644
--- a/pkgs/development/python-modules/jianpu-ly/default.nix
+++ b/pkgs/development/python-modules/jianpu-ly/default.nix
@@ -8,13 +8,13 @@
 
 buildPythonPackage rec {
   pname = "jianpu-ly";
-  version = "1.865";
+  version = "1.866";
   pyproject = true;
 
   src = fetchPypi {
     inherit version;
     pname = "jianpu_ly";
-    hash = "sha256-fW4qoaDrOZL+oKRPWIZbvuZSOCsrWDw0QsO4r6SJB/Y=";
+    hash = "sha256-nLVLRot4ECZyQ+G6o3mc4fVN9uGP/ZX2RATwaA6pGBI=";
   };
 
   dependencies = [ lilypond ];