diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 93b4aa56..6e958d86 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 4.2.1
+current_version = 5.0.0
 commit = True
 tag = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(-(?P<stage>[^.]*)\.(?P<devnum>\d+))?
diff --git a/setup.py b/setup.py
index d23eeec4..9e38f7f5 100644
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,7 @@
 setup(
     name="eth_abi",
     # *IMPORTANT*: Don't manually change the version here. Use `make bump`, as described in readme
-    version="4.2.1",
+    version="5.0.0",
     description="""eth_abi: Python utilities for working with Ethereum ABI definitions, especially encoding and decoding""",
     long_description=long_description,
     long_description_content_type="text/markdown",