diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a23447edb32..57cd90cbc2a 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -32,7 +32,7 @@ repos:
       - id: auto-walrus
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.6.7
+    rev: v0.8.4
     hooks:
       - id: ruff
         args: [ --fix ]
@@ -56,7 +56,7 @@ repos:
     - id: cython-lint
 
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.11.2
+    rev: v1.14.0
     hooks:
       - id: mypy  # See pyproject.toml for args
         additional_dependencies:
diff --git a/openlibrary/accounts/model.py b/openlibrary/accounts/model.py
index 31f1a14ddf7..0318b46d810 100644
--- a/openlibrary/accounts/model.py
+++ b/openlibrary/accounts/model.py
@@ -161,7 +161,7 @@ def username(self):
 
     def get_edit_count(self):
         user = self.get_user()
-        return user and user.get_edit_count() or 0
+        return (user and user.get_edit_count()) or 0
 
     @property
     def registered_on(self):
@@ -622,8 +622,8 @@ def authenticate(cls, email, password, test=False):
 
 class InternetArchiveAccount(web.storage):
     def __init__(self, **kwargs):
-        for k in kwargs:
-            setattr(self, k, kwargs[k])
+        for k, v in kwargs.items():
+            setattr(self, k, v)
 
     @classmethod
     def create(
diff --git a/openlibrary/core/helpers.py b/openlibrary/core/helpers.py
index 3d9709ca5a8..8bd1ad1da32 100644
--- a/openlibrary/core/helpers.py
+++ b/openlibrary/core/helpers.py
@@ -36,28 +36,27 @@
 # Helper functions that are added to `__all__` are exposed for use in templates
 # in /openlibrary/plugins/upstream/utils.py setup()
 __all__ = [
-    "sanitize",
-    "json_encode",
-    "safesort",
-    "days_since",
+    "affiliate_id",
+    "bookreader_host",
+    "commify",
+    "cond",
     "datestr",
+    "datetimestr_utc",
+    "days_since",
+    "extract_year",
     "format_date",
+    "json_encode",
+    "parse_datetime",  # function imported from elsewhere
+    "percentage",
+    "private_collection_in",
+    "private_collections",
+    "safeint",  # function imported from elsewhere
+    "safesort",
+    "sanitize",
     "sprintf",
-    "cond",
-    "commify",
+    "texsafe",
     "truncate",
-    "datetimestr_utc",
     "urlsafe",
-    "texsafe",
-    "percentage",
-    "affiliate_id",
-    "bookreader_host",
-    "private_collections",
-    "private_collection_in",
-    "extract_year",
-    # functions imported from elsewhere
-    "parse_datetime",
-    "safeint",
 ]
 __docformat__ = "restructuredtext en"
 
diff --git a/openlibrary/core/lists/model.py b/openlibrary/core/lists/model.py
index 6043a0921c1..1946338466e 100644
--- a/openlibrary/core/lists/model.py
+++ b/openlibrary/core/lists/model.py
@@ -161,7 +161,7 @@ def preview(self):
             "full_url": self.url(),
             "name": self.name or "",
             "seed_count": self.seed_count,
-            "last_update": self.last_update and self.last_update.isoformat() or None,
+            "last_update": (self.last_update and self.last_update.isoformat()) or None,
         }
 
     def get_work_keys(self) -> Iterable[ThingKey]:
@@ -585,7 +585,7 @@ def dict(self):
             "full_url": full_url,
             "type": self.type,
             "title": self.title,
-            "last_update": self.last_update and self.last_update.isoformat() or None,
+            "last_update": (self.last_update and self.last_update.isoformat()) or None,
         }
         if cover := self.get_cover():
             d['picture'] = {"url": cover.url("S")}
diff --git a/openlibrary/data/db.py b/openlibrary/data/db.py
index db3db45f36d..0295b8a1c53 100644
--- a/openlibrary/data/db.py
+++ b/openlibrary/data/db.py
@@ -30,11 +30,10 @@
 from openlibrary.utils import olmemcache
 
 __all__ = [
+    "iterdocs",
+    "longquery",
     "setup_database",
     "setup_memcache",
-    "longquery",
-    "iterdocs",
-    # "get_docs",  # "get_docs()" is not defined.
     "update_docs",
 ]
 
diff --git a/openlibrary/solr/types_generator.py b/openlibrary/solr/types_generator.py
index 9c46445d31c..a731daa4595 100755
--- a/openlibrary/solr/types_generator.py
+++ b/openlibrary/solr/types_generator.py
@@ -75,9 +75,9 @@ def generate():
         seen_names.add(name)
         python_fields.append(f"    {name}: {python_type}")
 
-    for key in OVERRIDES:
+    for key, value in OVERRIDES.items():
         if key not in seen_names:
-            python_fields.append(f"    {key}: {OVERRIDES[key]}")
+            python_fields.append(f"    {key}: {value}")
 
     body = '\n'.join(python_fields)
     python = f"""# This file is auto-generated by types_generator.py