diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 31794cd7a459f6..f36f232530594b 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -4,11 +4,11 @@ on:
   push:
     branches:
       - main
-      - 2.2.x
+      - 2.3.x
   pull_request:
     branches:
       - main
-      - 2.2.x
+      - 2.3.x
     paths-ignore:
       - "doc/**"
       - "web/**"
diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
index 1f4475ea5a83bc..825316585c03cc 100644
--- a/pandas/core/indexes/base.py
+++ b/pandas/core/indexes/base.py
@@ -23,7 +23,7 @@
 from pandas._config import (
     get_option,
     using_copy_on_write,
-    using_pyarrow_string_dtype,
+    using_string_dtype,
 )
 
 from pandas._libs import (
@@ -7015,7 +7015,7 @@ def insert(self, loc: int, item) -> Index:
 
         out = Index._with_infer(new_values, name=self.name)
         if (
-            using_pyarrow_string_dtype()
+            using_string_dtype()
             and is_string_dtype(out.dtype)
             and new_values.dtype == object
         ):