diff --git a/.circleci/config.yml b/.circleci/config.yml
index 44464f5..b675751 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -37,9 +37,8 @@ jobs:
           command: python -m pip install --upgrade pip
           name: upgrade pip
       - python/install-packages:
-          pip-dependency-file: requirements.txt
-          pkg-manager: pip
-      - run: pytest
+          pkg-manager: poetry
+      - run: poetry run pytest --version
 
 workflows:
   main:
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 800fd7f..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-aiohttp==3.7.1
-appdirs==1.4.4
-astroid==2.4.2
-async-timeout==3.0.1
-atomicwrites==1.4.0
-attrs==20.3.0
-black==20.8b1
-certifi==2020.11.8
-chardet==3.0.4
-click==7.1.2
-colorama==0.4.4
-gql==3.0.0a4
-graphql-core==3.1.2
-idna==2.10
-iniconfig==1.1.1
-isort==5.6.4
-lazy-object-proxy==1.4.3
-mccabe==0.6.1
-multidict==5.0.0
-mypy-extensions==0.4.3
-packaging==20.8
-pathspec==0.8.1
-pluggy==0.13.1
-py==1.10.0
-pydantic==1.7.2
-pylint==2.6.0
-pyparsing==2.4.7
-pytest==6.2.1
-pytest-ordering==0.6
-regex==2020.11.11
-requests==2.24.0
-six==1.15.0
-toml==0.10.2
-typed-ast==1.4.1
-typing-extensions==3.7.4.3
-urllib3==1.25.11
-websockets==8.1
-wrapt==1.12.1
-yarl==1.5.1