diff --git a/HISTORY.rst b/HISTORY.rst
index 9f7161c6..b6364be4 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -103,7 +103,7 @@ Release History
 - Support for connect timeouts! Timeout now accepts a tuple (connect, read) which is used to set individual connect and read timeouts.
 - Allow copying of PreparedRequests without headers/cookies.
 - Updated bundled urllib3 version.
-- Refactored settings loading from environment — new `Session.merge_environment_settings`.
+- Refactored settings loading from environment -- new `Session.merge_environment_settings`.
 - Handle socket errors in iter_content.