diff --git a/CHANGES.rst b/CHANGES.rst
index af6e4071..2ed379a2 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -40,6 +40,8 @@ Bug Fixes
   ``RequiredPackageUnavailable`` when ``synphot`` is not available, replacing a
   locally defined ``SynphotRequired`` or the generic ``ImportError``.
 
+* Fixed: spectral gradient calculations in ``sbpy.spectroscopy.SpectralGradient`` had the wrong sign when color was input as a linear ratio. [#389]
+
 
 0.4.0 (2023-06-30)
 ==================