diff --git a/package.json b/package.json
index d45efc7..4209314 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "commander": "^14.0.3",
     "file-saver": "^2.0.5",
     "git-diff": "^2.0.6",
-    "immutable": "^5.1.4",
+    "immutable": "^4.0.0",
     "inquirer": "^13.3.0",
     "lodash": "^4.17.23",
     "react-diff-viewer-continued": "4.0.6",
diff --git a/yarn.lock b/yarn.lock
index a7fc69a..06dab9a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9052,10 +9052,10 @@ immer@9.0.21, immer@^9.0.21, immer@^9.0.6:
   resolved "https://registry.yarnpkg.com/immer/-/immer-9.0.21.tgz#1e025ea31a40f24fb064f1fef23e931496330176"
   integrity sha512-bc4NBHqOqSfRW7POMkHd51LvClaeMXpm8dx0e8oE2GORbq5aRK7Bxl4FyzVLdGtLmvLKL7BTDBG5ACQm4HWjTA==
 
-immutable@^5.1.4:
-  version "5.1.4"
-  resolved "https://registry.yarnpkg.com/immutable/-/immutable-5.1.4.tgz#e3f8c1fe7b567d56cf26698f31918c241dae8c1f"
-  integrity sha512-p6u1bG3YSnINT5RQmx/yRZBpenIl30kVxkTLDyHLIMk0gict704Q9n+thfDI7lTRm9vXdDYutVzXhzcThxTnXA==
+immutable@^4.0.0:
+  version "4.3.7"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.3.7.tgz#c70145fc90d89fb02021e65c84eb0226e4e5a381"
+  integrity sha512-1hqclzwYwjRDFLjcFxOM5AYkkG0rpFPpr1RLPMEuGczoS7YA8gLhy8SWXYRAA/XwfEHpfo3cw5JGioS32fnMRw==
 
 import-fresh@^3.0.0, import-fresh@^3.2.1:
   version "3.3.1"