diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index c46f563..b681f37 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -31,9 +31,9 @@ jobs:
       - name: Install Poetry Action
         uses: snok/install-poetry@v1.3.4
       - name: Install Dependencies
-        run: poetry install
+        run: poetry install --only types
       - name: Run mypy
-        run: poetry run pytest
+        run: poetry run mypy wbdata
   test:
     name: Tests
     runs-on: ${{ matrix.os }}
@@ -51,6 +51,6 @@ jobs:
       - name: Install Poetry Action
         uses: snok/install-poetry@v1.3.4
       - name: Install Dependencies
-        run: poetry install
+        run: poetry install --only tests
       - name: Run Tests
         run: poetry run pytest
diff --git a/.gitignore b/.gitignore
index ace17f8..7f97897 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,3 +36,5 @@ nosetests.xml
 
 # Docs
 docs/_build/
+
+.mypy_cache
diff --git a/pyproject.toml b/pyproject.toml
index d866d6a..1130fc5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,6 @@ pandas = {version = ">=1,<3", optional=true}
 cachetools = "^5.3.2"
 shelved-cache = "^0.3.1"
 backoff = "^2.2.1"
-types-cachetools = "^5.3.0.7"
 dateparser = "^1.2.0"
 decorator = "^5.1.1"
 
@@ -34,16 +33,24 @@ pandas = ["pandas"]
 
 [tool.poetry.group.dev.dependencies]
 ruff = "^0.1.11"
+ipython = "<8"
+
+[tool.poetry.group.tests.dependencies]
 pytest = "^7.4.4"
+pytest-cov = "^4.1.0"
+
+[tool.poetry.group.docs.dependencies]
+mkdocs = "^1.5.3"
+mkdocstrings = "^0.24.0"
+
+[tool.poetry.group.types.dependencies]
 mypy = "^1.8.0"
+types-cachetools = "^5.3.0.7"
 types-tabulate = "^0.9.0.20240106"
 types-decorator = "^5.1.8.20240106"
 types-appdirs = "^1.4.3.5"
 types-requests = "^2.31.0.20240106"
-ipython = "<8"
 types-dateparser = "^1.1.4.20240106"
-mkdocs = "^1.5.3"
-mkdocstrings = "^0.24.0"
 
 [tool.ruff.lint]
 select = [