diff --git a/lib/dev-requirements.txt b/lib/dev-requirements.txt
index 2cdeb9db6c10..b956c528ae57 100644
--- a/lib/dev-requirements.txt
+++ b/lib/dev-requirements.txt
@@ -1,7 +1,7 @@
 black>=22.3.0
 pre-commit
 hypothesis>=6.17.4
-mypy>=1.4, <1.6
+mypy>=1.4
 mypy-protobuf>=3.2
 parameterized
 # Lower protobuf versions cause mypy issues during development builds
diff --git a/lib/streamlit/delta_generator.py b/lib/streamlit/delta_generator.py
index e9e7a1aaa65d..24d50b5cf590 100644
--- a/lib/streamlit/delta_generator.py
+++ b/lib/streamlit/delta_generator.py
@@ -403,7 +403,7 @@ def _get_delta_path_str(self) -> str:
         return str(dg._cursor.delta_path) if dg._cursor is not None else "[]"
 
     @overload
-    def _enqueue(  # type: ignore[misc]
+    def _enqueue(
         self,
         delta_type: str,
         element_proto: Message,
@@ -427,7 +427,7 @@ def _enqueue(  # type: ignore[misc]
         ...
 
     @overload
-    def _enqueue(  # type: ignore[misc]
+    def _enqueue(
         self,
         delta_type: str,
         element_proto: Message,
diff --git a/lib/streamlit/elements/widgets/time_widgets.py b/lib/streamlit/elements/widgets/time_widgets.py
index ba08cc35d1a5..bb5eb6a34e47 100644
--- a/lib/streamlit/elements/widgets/time_widgets.py
+++ b/lib/streamlit/elements/widgets/time_widgets.py
@@ -688,7 +688,7 @@ def parse_date_deterministic(
         elif isinstance(value, (datetime, date)):
             parsed = parse_date_deterministic(value)
         else:
-            parsed = [parse_date_deterministic(v) for v in value]
+            parsed = [parse_date_deterministic(cast(SingleDateValue, v)) for v in value]
 
         # TODO this is missing the error path, integrate with the dateinputvalues parsing