diff --git a/test/test_version_class.py b/test/test_version_class.py
index 8880488..486a2a7 100644
--- a/test/test_version_class.py
+++ b/test/test_version_class.py
@@ -66,7 +66,7 @@ def test_gradle(tmp_path):
     # test
     repo = VersionRepository(f)
     version = repo.get_version(ReleaseType.SNAPSHOT)
-    version.create_release_version() 
+    version = version.create_release_version() 
     repo.write_file(version.get_version_string())
     
     # check
@@ -84,7 +84,7 @@ def test_json(tmp_path):
     # test
     repo = VersionRepository(f)
     version = repo.get_version(ReleaseType.SNAPSHOT)
-    version.create_release_version() 
+    version = version.create_release_version() 
     repo.write_file(version.get_version_string())
     
     # check
@@ -102,7 +102,7 @@ def test_clojure(tmp_path):
     # test
     repo = VersionRepository(f)
     version = repo.get_version(ReleaseType.SNAPSHOT)
-    version.create_release_version() 
+    version = version.create_release_version()
     repo.write_file(version.get_version_string())
     
     # check
@@ -120,7 +120,7 @@ def test_python(tmp_path):
     # test
     repo = VersionRepository(f)
     version = repo.get_version(ReleaseType.SNAPSHOT)
-    version.create_release_version() 
+    version = version.create_release_version() 
     repo.write_file(version.get_version_string())
     
     # check