diff --git a/.travis.yml b/.travis.yml
index f1f87b5..e7306bf 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,7 @@ python:
   - "3.8"
   - "nightly"
 before_install: openssl enc -d -aes-256-ctr -pbkdf2 -k $KEY -in keyfile.toml.enc -out keyfile.toml
-install: pip install -U $DEPS pytest pytest-asyncio pytest-httpbin flaky structlog toml
+install: pip install -U $DEPS pytest pytest-asyncio pytest-httpbin flaky structlog toml appdirs
 script: pytest
 env:
   global:
diff --git a/mypy.ini b/mypy.ini
index a6d5643..a02b84b 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -17,3 +17,6 @@ ignore_missing_imports = True
 
 [mypy-pytest_httpbin]
 ignore_missing_imports = True
+
+[mypy-appdirs]
+ignore_missing_imports = True