Fix versions (#1450)

* Fix versions

* Fix numpy version

requirements.txt

@@ -14,6 +14,7 @@ eth-tester==0.1.0b32
 eth-typing>=2.0.0
 jinja2>=2.9
 mock
+numpy==1.19.0
 persistent>=4.2.0
 plyvel
 py-flags
@@ -23,7 +24,7 @@ py-solc
 pytest>=3.6.0
 pytest-cov
 pytest_mock
-requests>=2.22.0
+requests==2.25.0
 rlp>=1.0.1,<2.0.0
 semantic_version==2.8.5
 transaction>=2.2.1

setup.py

@@ -28,10 +28,11 @@ REQUIRED = [
     "py_ecc==1.6.0",
     "ethereum>=2.3.2",
     "z3-solver>=4.8.5.0",
-    "requests>=2.22.0",
+    "requests==2.25.0",
     "py-solc",
     "py-solc-x==1.0.0",
     "semantic_version==2.8.5",
+    "numpy==1.19.0",
     "plyvel",
     "eth_abi==1.3.0",
     "eth-account>=0.1.0a2,<=0.3.0",