diff --git a/CHANGELOG b/CHANGELOG
index 6b68c98..1baef84 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,5 @@
+* 0.4.2
+	- Upgrade rlp depencency
 * 0.4.1
 	- Make dependency versions explicit in setup
 * 0.4.0
diff --git a/requirements.txt b/requirements.txt
index 2b5ba7b..3c7bbff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,42 +1,9 @@
-attrs==19.3.0
-base58==2.0.1
-bitarray==1.2.2
-certifi==2020.6.20
-cffi==1.14.1
-chardet==3.0.4
-confini==0.3.2
-cryptography==3.2.1
-cytoolz==0.10.1
-eth-abi==2.1.1
-eth-account==0.5.4
-eth-hash==0.2.0
-eth-keyfile==0.5.1
-eth-keys==0.3.3
-eth-rlp==0.1.2
-eth-typing==2.2.1
-eth-utils==1.9.5
-hexbytes==0.2.1
-idna==2.10
-ipfshttpclient==0.6.0.post1
-json-rpc==1.13.0
-jsonschema==3.2.0
-lru-dict==1.1.6
-multiaddr==0.0.9
-netaddr==0.8.0
-parsimonious==0.8.1
-protobuf==3.12.4
-psycopg2==2.8.6
-pycparser==2.20
-pycryptodome==3.9.8
-pyrsistent==0.16.0
-pysha3==1.0.2
-python-gnupg==0.4.6
-requests==2.24.0
-rlp==1.2.0
-six==1.15.0
-SQLAlchemy==1.3.20
-toolz==0.10.0
-urllib3==1.25.10
-varint==1.0.2
 web3==5.12.2
-websockets==8.1
+psycopg2==2.8.6
+cryptography==3.2.1
+eth-keys==0.3.3
+pysha3==1.0.2
+rlp==2.0.1
+json-rpc==1.13.0
+confini==0.3.2
+sqlalchemy==1.3.20
diff --git a/setup.py b/setup.py
index a61bce8..2b51ce0 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@ f.close()
 
 setup(
         name="crypto-dev-signer",
-        version="0.4.1",
+        version="0.4.2",
         description="A signer and keystore daemon and library for cryptocurrency software development",
         author="Louis Holbrook",
         author_email="dev@holbrook.no",
@@ -24,7 +24,7 @@ setup(
             'cryptography==3.2.1',
             'eth-keys==0.3.3',
             'pysha3==1.0.2',
-            'rlp==1.2.0',
+            'rlp==2.0.1',
             'json-rpc==1.13.0',
             'confini==0.3.2',
             'sqlalchemy==1.3.20',
diff --git a/test_requirements.txt b/test_requirements.txt
new file mode 100644
index 0000000..e69de29