diff --git a/requirements-dev.txt b/requirements-dev.txt
index cf00aad4..d46aee12 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,6 +7,6 @@ httptools
 flake8
 pytest==3.3.2
 tox
-ujson
-uvloop
+ujson; sys_platform != "win32" and implementation_name == "cpython"
+uvloop; sys_platform != "win32" and implementation_name == "cpython"
 gunicorn
diff --git a/requirements.txt b/requirements.txt
index e370b52f..faeec926 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 aiofiles
 httptools
-ujson
-uvloop
+ujson; sys_platform != "win32" and implementation_name == "cpython"
+uvloop; sys_platform != "win32" and implementation_name == "cpython"
 websockets
diff --git a/setup.py b/setup.py
index 45aa7b6f..3f7812a2 100644
--- a/setup.py
+++ b/setup.py
@@ -51,8 +51,9 @@ setup_kwargs = {
     ],
 }
 
-ujson = 'ujson>=1.35'
-uvloop = 'uvloop>=0.5.3'
+env_dependency = '; sys_platform != "win32" and implementation_name == "cpython"'
+ujson = 'ujson>=1.35' + env_dependency
+uvloop = 'uvloop>=0.5.3' + env_dependency
 
 requirements = [
     'httptools>=0.0.9',
@@ -66,16 +67,9 @@ if strtobool(os.environ.get("SANIC_NO_UJSON", "no")):
     requirements.remove(ujson)
 
 # 'nt' means windows OS
-if strtobool(os.environ.get("SANIC_NO_UVLOOP", "no")) or os.name == 'nt':
+if strtobool(os.environ.get("SANIC_NO_UVLOOP", "no")):
     print("Installing without uvLoop")
     requirements.remove(uvloop)
 
-try:
-    setup_kwargs['install_requires'] = requirements
-    setup(**setup_kwargs)
-except DistutilsPlatformError as exception:
-    requirements.remove(ujson)
-    requirements.remove(uvloop)
-    print("Installing without uJSON or uvLoop")
-    setup_kwargs['install_requires'] = requirements
-    setup(**setup_kwargs)
+setup_kwargs['install_requires'] = requirements
+setup(**setup_kwargs)