diff --git a/deposit_contract/requirements-testing.txt b/deposit_contract/requirements-testing.txt
index fe4b88a23..c542121c2 100644
--- a/deposit_contract/requirements-testing.txt
+++ b/deposit_contract/requirements-testing.txt
@@ -1,5 +1,5 @@
 eth-tester[py-evm]==0.1.0b39
-https://github.com/vyperlang/vyper/archive/1761-HOTFIX-v0.1.0-beta.13.tar.gz
+git+https://github.com/vyperlang/vyper@1761-HOTFIX-v0.1.0-beta.13
 web3==5.0.0b2
 pytest==3.6.1
 ../test_libs/pyspec
diff --git a/test_libs/pyspec/requirements.txt b/test_libs/pyspec/requirements.txt
index 480602779..8dfbccf66 100644
--- a/test_libs/pyspec/requirements.txt
+++ b/test_libs/pyspec/requirements.txt
@@ -1,6 +1,6 @@
 eth-utils>=1.3.0,<2
 eth-typing>=2.1.0,<3.0.0
-pycryptodome==3.7.3
+pycryptodome==3.9.4
 py_ecc==1.7.1
 dataclasses==0.6
 ssz==0.1.3
diff --git a/test_libs/pyspec/setup.py b/test_libs/pyspec/setup.py
index 94575f2a1..d41412eb8 100644
--- a/test_libs/pyspec/setup.py
+++ b/test_libs/pyspec/setup.py
@@ -7,7 +7,7 @@ setup(
     install_requires=[
         "eth-utils>=1.3.0,<2",
         "eth-typing>=2.1.0,<3.0.0",
-        "pycryptodome==3.7.3",
+        "pycryptodome==3.9.4",
         "py_ecc==1.7.1",
         "ssz==0.1.3",
         "dataclasses==0.6",