diff --git a/CHANGELOG b/CHANGELOG
index 14e3f311b..d312ea3ee 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,16 @@
 CHANGELOG
 =========
 
+3.0.51: 2025-04-15
+------------------
+
+New features:
+- Use pyproject.toml instead of setup.py.
+
+Fixes:
+- Fix edge case in `formatted_text.split_lines` when the input starts with a
+  line ending.
+
 3.0.50: 2025-01-20
 ------------------
 
diff --git a/docs/conf.py b/docs/conf.py
index 56c27487b..c42156feb 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -54,9 +54,9 @@
 # ---------------------------------------------------------------------
 # Versions.
 # The short X.Y version.
-version = "3.0.50"
+version = "3.0.51"
 # The full version, including alpha/beta/rc tags.
-release = "3.0.50"
+release = "3.0.51"
 # The URL pattern to match releases to ReadTheDocs URLs.
 docs_fmt_url = "https://python-prompt-toolkit.readthedocs.io/en/{release}/"
 # The list of releases to include in the dropdown.
diff --git a/pyproject.toml b/pyproject.toml
index 73f327194..0a212a96e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "prompt_toolkit"
-version = "3.0.50"
+version = "3.0.51"  # Also update in `docs/conf.py`.
 description="Library for building powerful interactive command lines in Python"
 readme = "README.rst"
 authors = [{ name = "Jonathan Slenders" }]