diff --git a/build-requirements.txt b/build-requirements.txt
index 52c518d53bc2..0b1e6d43103a 100644
--- a/build-requirements.txt
+++ b/build-requirements.txt
@@ -2,4 +2,4 @@
 -r mypy-requirements.txt
 types-psutil
 types-setuptools
-types-typed-ast>=1.5.8,<1.6.0
+types-typed-ast>=1.5.8.5,<1.6.0
diff --git a/mypy/fastparse.py b/mypy/fastparse.py
index cc2b47cd6034..6ff51e25ad5f 100644
--- a/mypy/fastparse.py
+++ b/mypy/fastparse.py
@@ -844,7 +844,7 @@ def translate_module_id(self, id: str) -> str:
     def visit_Module(self, mod: ast3.Module) -> MypyFile:
         self.type_ignores = {}
         for ti in mod.type_ignores:
-            parsed = parse_type_ignore_tag(ti.tag)  # type: ignore[attr-defined]
+            parsed = parse_type_ignore_tag(ti.tag)
             if parsed is not None:
                 self.type_ignores[ti.lineno] = parsed
             else:
diff --git a/pyproject.toml b/pyproject.toml
index 328b9bf159a1..20301bf64216 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ requires = [
     # the following is from build-requirements.txt
     "types-psutil",
     "types-setuptools",
-    "types-typed-ast>=1.5.8,<1.6.0",
+    "types-typed-ast>=1.5.8.5,<1.6.0",
 ]
 build-backend = "setuptools.build_meta"