diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9af0709..ae0f49d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Development Build: v2.5.0-rc4_dev81
+- define msgids via topicids
+- See <https://github.com/nasa/ci_lab/pull/165>
+
 ## Development Build: v2.5.0-rc4+dev77
 - Remove unused PDU related function codes
 - Remove obsolete README comment
diff --git a/fsw/src/ci_lab_version.h b/fsw/src/ci_lab_version.h
index 2a03aef..234e7d9 100644
--- a/fsw/src/ci_lab_version.h
+++ b/fsw/src/ci_lab_version.h
@@ -25,7 +25,7 @@
 
 /* Development Build Macro Definitions */
 
-#define CI_LAB_BUILD_NUMBER 77 /*!< Development Build: Number of commits since baseline */
+#define CI_LAB_BUILD_NUMBER 81 /*!< Development Build: Number of commits since baseline */
 #define CI_LAB_BUILD_BASELINE \
     "v2.5.0-rc4" /*!< Development Build: git tag that is the base for the current development */