diff --git a/CHANGES.rst b/CHANGES.rst
index 83c17c041..cefa33821 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -28,6 +28,12 @@ Unreleased
   - Lambdas, comprehensions, and generator expressions are no longer marked as
     missing branches if they don't complete execution.
 
+- Fixed a potential crash in the C tracer, closing `issue 1835`_, thanks to
+  `Jan Kühle <pull 1843_>`_.
+
+.. _issue 1835: https://github.com/nedbat/coveragepy/issues/1835
+.. _pull 1843: https://github.com/nedbat/coveragepy/pull/1843
+
 
 .. scriv-start-here
 
diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 9097546ea..82bab8478 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -106,6 +106,7 @@ JT Olds
 Jacqueline Lee
 Jakub Wilk
 James Valleroy
+Jan Kühle
 Jan Rusak
 Janakarajan Natarajan
 Jerin Peter George