diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8225d7c..d339d8b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -79,4 +79,3 @@ repos:
         language: system
         types: [python]
         exclude: tasks.py$
-        args: ["--cache-dir=/dev/null"]
diff --git a/stubs/readtime/api.pyi b/stubs/readtime/api.pyi
index 3d326a1..305be57 100644
--- a/stubs/readtime/api.pyi
+++ b/stubs/readtime/api.pyi
@@ -1,5 +1,5 @@
 from .result import Result
 
-def of_text(text, wpm: int | None = ...) -> Result: ...
-def of_html(html, wpm: int | None = ...) -> Result: ...
-def of_markdown(markdown, wpm: int | None = ...) -> Result: ...
+def of_text(text: str, wpm: int | None = ...) -> Result: ...
+def of_html(html: str, wpm: int | None = ...) -> Result: ...
+def of_markdown(markdown: str, wpm: int | None = ...) -> Result: ...
diff --git a/stubs/readtime/result.pyi b/stubs/readtime/result.pyi
index f22c6d7..5cc85af 100644
--- a/stubs/readtime/result.pyi
+++ b/stubs/readtime/result.pyi
@@ -11,4 +11,4 @@ class Result:
     def minutes(self) -> int: ...
     @property
     def text(self) -> str: ...
-    def total_seconds(self, delta) -> int: ...
+    def total_seconds(self, delta: timedelta) -> int: ...