diff --git a/CHANGELOG.md b/CHANGELOG.md
index 651ff83a9..1c628abce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ BUG FIXES:
 
 * command/show: use the state snapshot included in the planfile when rendering a plan to json [GH-21597]
 * core: Don't panic when encountering an invalid `depends_on` [GH-21590]
+* backend: Fix panic when upgrading from a state with a hash value greater than MaxInt [GH-21484]
 
 ## 0.12.1 (June 3, 2019)