Pin the versions

Especially, use the latest multiaddr

setup.py

@@ -15,16 +15,16 @@ setuptools.setup(
     platforms=["unix", "linux", "osx"],
     classifiers=classifiers,
     install_requires=[
-        "pycryptodome",
-        "click",
-        "base58",
-        "pymultihash",
-        "multiaddr==0.0.4",
-        "rpcudp",
-        "grpcio",
-        "grpcio-tools",
+        "pycryptodome>=3.8.2,<4.0.0",
+        "click>=7.0,<8.0",
+        "base58>=1.0.3,<2.0.0",
+        "pymultihash>=0.8.2",
+        "multiaddr>=0.0.8,<0.1.0",
+        "rpcudp>=3.0.0,<4.0.0",
+        "grpcio>=1.21.1,<2.0.0",
+        "grpcio-tools>=1.21.1,<2.0.0",
         "lru-dict>=1.1.6",
-        "aio_timers"
+        "aio_timers>=0.0.1,<0.1.0",
     ],
     packages=setuptools.find_packages(exclude=["tests", "tests.*"]),
     zip_safe=False,