diff --git a/pkgs/development/python-modules/simple_di/default.nix b/pkgs/development/python-modules/simple-di/default.nix
similarity index 100%
rename from pkgs/development/python-modules/simple_di/default.nix
rename to pkgs/development/python-modules/simple-di/default.nix
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index b8dca23a305e..456930db6b17 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -8534,7 +8534,7 @@ in {
 
   simplekml = callPackage ../development/python-modules/simplekml { };
 
-  simple-di = callPackage ../development/python-modules/simple_di { };
+  simple-di = callPackage ../development/python-modules/simple-di { };
 
   simple-rest-client = callPackage ../development/python-modules/simple-rest-client { };