diff --git a/poetry.lock b/poetry.lock
index 39395ef..b5b5dad 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -394,7 +394,7 @@ pytest = ">=3.5"
 
 [[package]]
 name = "pytest-runner"
-version = "5.3.0"
+version = "5.3.2"
 description = "Invoke py.test as distutils command with dependency resolution"
 category = "dev"
 optional = false
@@ -402,7 +402,7 @@ python-versions = ">=3.6"
 
 [package.extras]
 docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-cov", "pytest-enabler", "pytest-virtualenv", "pytest-black (>=0.3.7)", "pytest-mypy"]
+testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "pytest-virtualenv", "pytest-black (>=0.3.7)", "pytest-mypy"]
 
 [[package]]
 name = "python-dateutil"
@@ -428,7 +428,7 @@ name = "pyyaml"
 version = "5.3.1"
 description = "YAML parser and emitter for Python"
 category = "dev"
-optional = false
+optional = true
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
@@ -935,8 +935,8 @@ pytest-flake8 = [
     {file = "pytest_flake8-1.0.7-py2.py3-none-any.whl", hash = "sha256:c28cf23e7d359753c896745fd4ba859495d02e16c84bac36caa8b1eec58f5bc1"},
 ]
 pytest-runner = [
-    {file = "pytest-runner-5.3.0.tar.gz", hash = "sha256:ca3f58ff4957e8be6c54c55d575b235725cbbcf4dc0d5091c29c6444cfc8a5fe"},
-    {file = "pytest_runner-5.3.0-py3-none-any.whl", hash = "sha256:448959d9ada752de2b369cf05c1c0f9e6d2027e7d32441187c16c24c1d4d6e77"},
+    {file = "pytest-runner-5.3.2.tar.gz", hash = "sha256:48934ec94301f6727d30615af1960539ff62063f6c9b71b7227174e51ba5fb34"},
+    {file = "pytest_runner-5.3.2-py3-none-any.whl", hash = "sha256:c7d785ea6c612396c11ddbaf467764d2cc746ef96a713fbe1a296c221503b7c3"},
 ]
 python-dateutil = [
     {file = "python-dateutil-2.7.5.tar.gz", hash = "sha256:88f9287c0174266bb0d8cedd395cfba9c58e87e5ad86b2ce58859bc11be3cf02"},