diff --git a/pkgs/development/python-modules/sudachidict/default.nix b/pkgs/development/python-modules/sudachidict/default.nix
index 72826908612c7..41a359110474f 100644
--- a/pkgs/development/python-modules/sudachidict/default.nix
+++ b/pkgs/development/python-modules/sudachidict/default.nix
@@ -2,6 +2,7 @@
 , fetchFromGitHub
 , sudachidict
 , setuptools
+, sudachipy
 }:
 
 buildPythonPackage rec {
@@ -33,6 +34,10 @@ buildPythonPackage rec {
     setuptools
   ];
 
+  propagatedBuildInputs = [
+    sudachipy
+  ];
+
   # we need to prepare some files before the build
   # https://github.com/WorksApplications/SudachiDict/blob/develop/package_python.sh
   preBuild = ''
diff --git a/pkgs/development/python-modules/sudachipy/default.nix b/pkgs/development/python-modules/sudachipy/default.nix
index 04460f5274c13..3e3bd5b4adf65 100644
--- a/pkgs/development/python-modules/sudachipy/default.nix
+++ b/pkgs/development/python-modules/sudachipy/default.nix
@@ -10,6 +10,7 @@
 , pytestCheckHook
 , sudachidict-core
 , tokenizers
+, sudachipy
 }:
 
 buildPythonPackage rec {
@@ -37,6 +38,9 @@ buildPythonPackage rec {
     cd python
   '';
 
+  # avoid infinite recursion due to sudachidict
+  doCheck = false;
+
   nativeCheckInputs = [
     pytestCheckHook
     sudachidict-core
@@ -49,6 +53,16 @@ buildPythonPackage rec {
 
   passthru = {
     inherit (sudachi-rs) updateScript;
+    tests = {
+      pytest = sudachipy.overridePythonAttrs (
+        _: {
+          doCheck = true;
+          # avoid catchConflicts of sudachipy
+          # we don't need to install this package since it is just a test
+          dontInstall = true;
+        }
+      );
+    };
   };
 
   meta = sudachi-rs.meta // {