diff --git a/poetry.lock b/poetry.lock
index e16f213..3c0721e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -210,6 +210,14 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "itsdangerous"
+version = "1.1.0"
+description = "Various helpers to pass data to untrusted environments and back."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
 [[package]]
 name = "jinja2"
 version = "2.11.3"
@@ -462,14 +470,23 @@ socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
 
 [[package]]
 name = "requests-cache"
-version = "0.5.2"
+version = "0.6.3"
 description = "Persistent cache for requests library"
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
 
 [package.dependencies]
-requests = ">=1.1.0"
+itsdangerous = "*"
+requests = ">=2.0.0"
+url-normalize = ">=1.4"
+
+[package.extras]
+backends = ["boto3", "pymongo", "redis"]
+build = ["coveralls", "twine", "wheel"]
+dev = ["coveralls", "twine", "wheel", "boto3", "pymongo", "redis", "m2r2", "Sphinx (>=3.5.3,<3.6.0)", "sphinx-autodoc-typehints", "sphinx-copybutton", "sphinx-rtd-theme (>=0.5.2,<0.6.0)", "sphinxcontrib-apidoc", "black (==20.8b1)", "flake8", "flake8-comprehensions", "flake8-polyfill", "isort", "pre-commit", "psutil", "pytest (>=5.0)", "pytest-cov (>=2.11)", "pytest-order (>=0.11.0,<0.12.0)", "pytest-xdist", "radon", "requests-mock (>=1.8)", "timeout-decorator"]
+docs = ["m2r2", "Sphinx (>=3.5.3,<3.6.0)", "sphinx-autodoc-typehints", "sphinx-copybutton", "sphinx-rtd-theme (>=0.5.2,<0.6.0)", "sphinxcontrib-apidoc"]
+test = ["black (==20.8b1)", "flake8", "flake8-comprehensions", "flake8-polyfill", "isort", "pre-commit", "psutil", "pytest (>=5.0)", "pytest-cov (>=2.11)", "pytest-order (>=0.11.0,<0.12.0)", "pytest-xdist", "radon", "requests-mock (>=1.8)", "timeout-decorator"]
 
 [[package]]
 name = "responses"
@@ -658,6 +675,17 @@ virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,
 docs = ["pygments-github-lexers (>=0.0.5)", "sphinx (>=2.0.0)", "sphinxcontrib-autoprogram (>=0.1.5)", "towncrier (>=18.5.0)"]
 testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)", "pytest-xdist (>=1.22.2)"]
 
+[[package]]
+name = "url-normalize"
+version = "1.4.3"
+description = "URL normalization for Python"
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+
+[package.dependencies]
+six = "*"
+
 [[package]]
 name = "urllib3"
 version = "1.24.2"
@@ -703,7 +731,7 @@ travis-ci = []
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "a18078e1b4a0363f1c0171e88d27f24b80e5a9e8d460836525b282702be6458f"
+content-hash = "daed9b1deb68c81714479302184113ce381285f82720f8cdc604d58f57bad0f2"
 
 [metadata.files]
 alabaster = [
@@ -844,6 +872,10 @@ incremental = [
 iniconfig = [
     {file = "iniconfig-1.0.0.tar.gz", hash = "sha256:aa0b40f50a00e72323cb5d41302f9c6165728fd764ac8822aa3fff00a40d56b4"},
 ]
+itsdangerous = [
+    {file = "itsdangerous-1.1.0-py2.py3-none-any.whl", hash = "sha256:b12271b2047cb23eeb98c8b5622e2e5c5e9abd9784a153e9d8ef9cb4dd09d749"},
+    {file = "itsdangerous-1.1.0.tar.gz", hash = "sha256:321b033d07f2a4136d3ec762eac9f16a10ccd60f53c0c91af90217ace7ba1f19"},
+]
 jinja2 = [
     {file = "Jinja2-2.11.3-py2.py3-none-any.whl", hash = "sha256:03e47ad063331dd6a3f04a43eddca8a966a26ba0c5b7207a9a9e4e08f1b29419"},
     {file = "Jinja2-2.11.3.tar.gz", hash = "sha256:a6d58433de0ae800347cab1fa3043cebbabe8baa9d29e668f1c768cb87a333c6"},
@@ -968,8 +1000,8 @@ requests = [
     {file = "requests-2.25.1.tar.gz", hash = "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804"},
 ]
 requests-cache = [
-    {file = "requests-cache-0.5.2.tar.gz", hash = "sha256:813023269686045f8e01e2289cc1e7e9ae5ab22ddd1e2849a9093ab3ab7270eb"},
-    {file = "requests_cache-0.5.2-py2.py3-none-any.whl", hash = "sha256:81e13559baee64677a7d73b85498a5a8f0639e204517b5d05ff378e44a57831a"},
+    {file = "requests-cache-0.6.3.tar.gz", hash = "sha256:0b9b5555b3b2ecda74a9aa5abd98174bc7332de2e1d32f9f8f056583b01d6e99"},
+    {file = "requests_cache-0.6.3-py2.py3-none-any.whl", hash = "sha256:6e28e461873415036ea383c2414691cf1164cb01391ad4c45b84b3ebf0fb9287"},
 ]
 responses = [
     {file = "responses-0.10.15-py2.py3-none-any.whl", hash = "sha256:af94d28cdfb48ded0ad82a5216616631543650f440334a693479b8991a6594a2"},
@@ -1028,6 +1060,10 @@ tox = [
     {file = "tox-3.19.0-py2.py3-none-any.whl", hash = "sha256:3d94b6921a0b6dc90fd8128df83741f30bb41ccd6cd52d131a6a6944ca8f16e6"},
     {file = "tox-3.19.0.tar.gz", hash = "sha256:17e61a93afe5c49281fb969ab71f7a3f22d7586d1c56f9a74219910f356fe7d3"},
 ]
+url-normalize = [
+    {file = "url-normalize-1.4.3.tar.gz", hash = "sha256:d23d3a070ac52a67b83a1c59a0e68f8608d1cd538783b401bc9de2c0fac999b2"},
+    {file = "url_normalize-1.4.3-py2.py3-none-any.whl", hash = "sha256:ec3c301f04e5bb676d333a7fa162fa977ad2ca04b7e652bfc9fac4e405728eed"},
+]
 urllib3 = [
     {file = "urllib3-1.24.2-py2.py3-none-any.whl", hash = "sha256:4c291ca23bbb55c76518905869ef34bdd5f0e46af7afe6861e8375643ffee1a0"},
     {file = "urllib3-1.24.2.tar.gz", hash = "sha256:9a247273df709c4fedb38c711e44292304f73f39ab01beda9f6b9fc375669ac3"},
diff --git a/pyproject.toml b/pyproject.toml
index 7a5815f..d002609 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ classifiers = [
 python = "^3.6"
 rauth = "^0.7.3"
 requests = "^2.21"
-requests-cache = ">=0.4.13,<0.6.0"
+requests-cache = ">=0.4.13,<0.7.0"
 furl = "^2.0"
 arrow = ">=0.12.1,<0.17.0"