diff --git a/pyproject.toml b/pyproject.toml
index cf92e7cc4a..8e0e066fb0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "splink"
-version = "4.0.0.dev7"
+version = "4.0.0.dev8"
 description = "Fast probabilistic data linkage at scale"
 authors = ["Robin Linacre <robinlinacre@hotmail.com>", "Sam Lindsay", "Theodore Manassis", "Tom Hepworth", "Andy Bond", "Ross Kennedy"]
 license = "MIT"
diff --git a/splink/__init__.py b/splink/__init__.py
index e2e9c0232d..95aa117821 100644
--- a/splink/__init__.py
+++ b/splink/__init__.py
@@ -44,7 +44,7 @@ def __getattr__(name):
     raise AttributeError(f"module 'splink' has no attribute '{name}'") from None
 
 
-__version__ = "4.0.0.dev7"
+__version__ = "4.0.0.dev8"
 
 
 __all__ = [