diff --git a/docs/source/index.rst b/docs/source/index.rst
index b34d077..7ec6f2d 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -43,7 +43,6 @@ python-keycloak depends on:
 * Python 3
 * `requests <http://docs.python-requests.org/en/master/>`_
 * `python-jose <http://python-jose.readthedocs.io/en/latest/>`_
-* `simplejson <https://simplejson.readthedocs.io/en/latest/>`_
 
 Tests Dependencies
 ------------------
diff --git a/keycloak/exceptions.py b/keycloak/exceptions.py
index aeef7c2..3b0b147 100644
--- a/keycloak/exceptions.py
+++ b/keycloak/exceptions.py
@@ -22,7 +22,6 @@
 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 import requests
-from simplejson import JSONDecodeError
 
 
 class KeycloakError(Exception):
@@ -82,7 +81,7 @@ def raise_error_from_response(response, error, expected_code=200, skip_exists=Fa
 
         try:
             return response.json()
-        except JSONDecodeError as e:
+        except ValueError:
             return response.content
 
     if skip_exists and response.status_code == 409:
diff --git a/requirements.txt b/requirements.txt
index f03af1b..70d3ca7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
 requests>=2.18.4
 httmock>=1.2.5
 python-jose>=1.4.0
-simplejson
diff --git a/setup.py b/setup.py
index 01ba275..04f95c6 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,8 @@ setup(
     long_description=long_description,
     long_description_content_type="text/markdown",
     packages=['keycloak', 'keycloak.authorization', 'keycloak.tests'],
-    install_requires=['requests==2.18.4', 'httmock==1.2.5', 'python-jose==1.4.0', 'simplejson'],
+    install_requires=['requests==2.18.4', 'python-jose==1.4.0'],
+    tests_require=['httmock==1.2.5'],
     classifiers=[
         'Programming Language :: Python :: 3',
         'License :: OSI Approved :: MIT License',