diff --git a/CHANGELOG.md b/CHANGELOG.md
index b84f4c908f790751c2741b445b103437150cedc2..630e048e0f501c2761cb66410180ffb9bc13cf55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,9 @@ release.
 
 ## [Unreleased]
 
+### Fixed
+- Updated `read_gpf()` to correctly parse hybrid-style GPFs from Socet GXP. [#191](https://github.com/USGS-Astrogeology/plio/pull/191)
+
 ## [1.5.2]() 
 
 - Made gdal an optional dependency. [#186](https://github.com/USGS-Astrogeology/plio/pull/186)