diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75559196b..aba47d476 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `benchmarks` subpackage for defining and running performance tests
 – `Campaign.toggle_discrete_candidates` to dynamically in-/exclude discrete candidates
 - `filter_df` utility for filtering dataframe content
+- `label_input_and_output_columns` decorator to create lookups from array-based
+  callables
 - `DiscreteConstraint.get_valid` to conveniently access valid candidates
 - Functionality for persisting benchmarking results on S3 from a manual pipeline run