diff --git a/hypothesis-python/RELEASE.rst b/hypothesis-python/RELEASE.rst
new file mode 100644
index 0000000000..aa0c84190a
--- /dev/null
+++ b/hypothesis-python/RELEASE.rst
@@ -0,0 +1,3 @@
+RELEASE_TYPE: patch
+
+This patch tweaks our linter configuration for :pypi:`mypy` 0.790.
diff --git a/hypothesis-python/src/hypothesis/strategies/_internal/core.py b/hypothesis-python/src/hypothesis/strategies/_internal/core.py
index 46ac3d51f4..ac053fcfaa 100644
--- a/hypothesis-python/src/hypothesis/strategies/_internal/core.py
+++ b/hypothesis-python/src/hypothesis/strategies/_internal/core.py
@@ -1476,7 +1476,7 @@ def as_strategy(strat_or_callable, thing, final=True):
     # We also have a special case for TypeVars.
     # They are represented as instances like `~T` when they come here.
     # We need to work with their type instead.
-    if isinstance(thing, TypeVar) and type(thing) in types._global_type_lookup:  # type: ignore
+    if isinstance(thing, TypeVar) and type(thing) in types._global_type_lookup:
         return as_strategy(types._global_type_lookup[type(thing)], thing)
     # If there's no explicitly registered strategy, maybe a subtype of thing
     # is registered - if so, we can resolve it to the subclass strategy.