Fix CI for py 3.7

.circleci/config.yml

@@ -35,6 +35,7 @@ jobs:
           name: install dependencies
           command: |
             sudo python -m pip install -r requirements-test.txt
+            sudo python -m pip install --upgrade secp256k1
 
       # run tests!
       # this example uses Django's built-in test-runner
@@ -71,6 +72,7 @@ jobs:
           name: install dependencies
           command: |
             sudo python -m pip install --upgrade -r requirements-test.txt
+            sudo python -m pip install --upgrade secp256k1
 
       - run:
           name: run tests
@@ -93,6 +95,7 @@ jobs:
           name: install dependencies
           command: |
             sudo python -m pip install --upgrade -r requirements-test.txt
+            sudo python -m pip install --upgrade secp256k1
 
       - run:
           name: run tests
@@ -115,6 +118,7 @@ jobs:
           name: install dependencies
           command: |
             sudo python -m pip install --upgrade -r requirements-test.txt
+            sudo python -m pip install --upgrade secp256k1
       - run:
           name: run tests
           command: |

requirements-test.txt

@@ -9,7 +9,6 @@ pytz==2018.7
 pycryptodomex==3.7.0
 scrypt==0.8.6
 Events==0.3
-secp256k1==0.13.2
 cryptography==2.3.1
 pyyaml==3.13
 mock==2.0.0