diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09c74342..88fb953f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,10 @@ will consitute of a breaking change warranting a new major release:
 
 - Host build fixes
 
+# [v6.5.1] 2023-09-12
+
+- Bumped `eive-tmtc` to v5.5.0.
+
 # [v6.5.0] 2023-09-12
 
 ## Changed
diff --git a/tmtc b/tmtc
index 1860b754..8b45dd8b 160000
--- a/tmtc
+++ b/tmtc
@@ -1 +1 @@
-Subproject commit 1860b754cee61b298832ea83d918499c8a3d6e51
+Subproject commit 8b45dd8bff5c0a31cdb2f56edc082624bf1fb936