diff --git a/poetry.lock b/poetry.lock
index d3458c5..14f8d66 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -239,7 +239,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "importlib-metadata"
-version = "3.0.0"
+version = "3.1.0"
 description = "Read metadata from Python packages"
 category = "dev"
 optional = false
@@ -250,7 +250,7 @@ zipp = ">=0.5"
 
 [package.extras]
 docs = ["sphinx", "rst.linker"]
-testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
+testing = ["packaging", "pep517", "unittest2", "importlib-resources (>=1.3)"]
 
 [[package]]
 name = "iniconfig"
@@ -825,8 +825,8 @@ imagesize = [
     {file = "imagesize-1.2.0.tar.gz", hash = "sha256:b1f6b5a4eab1f73479a50fb79fcf729514a900c341d8503d62a62dbc4127a2b1"},
 ]
 importlib-metadata = [
-    {file = "importlib_metadata-3.0.0-py2.py3-none-any.whl", hash = "sha256:fc3b3f9697703d3833d2803162d60cbe8b9f57b5da5e6496ac81e3cb82bd8d9c"},
-    {file = "importlib_metadata-3.0.0.tar.gz", hash = "sha256:d582eb5c35b2f16c78e365e0f89e369f36af38fdaad0146208aa973c693ba247"},
+    {file = "importlib_metadata-3.1.0-py2.py3-none-any.whl", hash = "sha256:590690d61efdd716ff82c39ca9a9d4209252adfe288a4b5721181050acbd4175"},
+    {file = "importlib_metadata-3.1.0.tar.gz", hash = "sha256:d9b8a46a0885337627a6430db287176970fff18ad421becec1d64cfc763c2099"},
 ]
 iniconfig = [
     {file = "iniconfig-1.1.1-py2.py3-none-any.whl", hash = "sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3"},