diff --git a/Pipfile b/Pipfile
index 7817d24..b35a101 100644
--- a/Pipfile
+++ b/Pipfile
@@ -20,6 +20,7 @@ pytest-env = "*"
 pytest-cov = "*"
 
 [packages]
+exceptiongroup = "*"
 
 [requires]
 python_version = "3.11"
diff --git a/Pipfile.lock b/Pipfile.lock
index e423860..80e1576 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "3b9daa4a9ceadb7223bcda9bbb054751c0be0e289a55291916d91170a1b061b7"
+            "sha256": "078d5c4dc94f5698af821f7e0dc369add02c1afea422880b46b80181bcda7030"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -15,7 +15,16 @@
             }
         ]
     },
-    "default": {},
+    "default": {
+        "exceptiongroup": {
+            "hashes": [
+                "sha256:097acd85d473d75af5bb98e41b61ff7fe35efe6675e4f9370ec6ec5126d160e9",
+                "sha256:343280667a4585d195ca1cf9cef84a4e178c4b6cf2274caef9859782b567d5e3"
+            ],
+            "index": "pypi",
+            "version": "==1.1.3"
+        }
+    },
     "develop": {
         "astor": {
             "hashes": [