diff --git a/tracetools_launch/CHANGELOG.rst b/tracetools_launch/CHANGELOG.rst
index aaab6e4..39757f3 100644
--- a/tracetools_launch/CHANGELOG.rst
+++ b/tracetools_launch/CHANGELOG.rst
@@ -2,6 +2,11 @@
 Changelog for package tracetools_launch
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+Forthcoming
+-----------
+* Use imperative mood in constructor docstring.
+* Contributors: Christophe Bedard, Steven! Ragnarök
+
 0.2.11 (2019-12-09)
 -------------------
 * Register Python packages in the ament index
diff --git a/tracetools_test/CHANGELOG.rst b/tracetools_test/CHANGELOG.rst
index b6a0a0f..3ef4e71 100644
--- a/tracetools_test/CHANGELOG.rst
+++ b/tracetools_test/CHANGELOG.rst
@@ -2,6 +2,11 @@
 Changelog for package tracetools_test
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
+Forthcoming
+-----------
+* Use imperative mood in constructor docstring.
+* Contributors: Christophe Bedard, Steven! Ragnarök
+
 0.2.11 (2019-12-09)
 -------------------
 * Fix working directory for tracetools_test Python tests