diff --git a/README.md b/README.md
index da399b8d5..04bc286e5 100644
--- a/README.md
+++ b/README.md
@@ -11,10 +11,15 @@ The autogenerated OSAL user's guide can be viewed at <https://github.com/nasa/cF
 
 ## Version History
 
+### Development Build: v5.1.0-rc1+dev578
+
+- Add unit test branch coverage
+- See <https://github.com/nasa/osal/pull/1116> and <https://github.com/nasa/cfs/pull/313>
+
 ### Development Build: v5.1.0-rc1+dev573
 
 - Add independent OS_rename functional test parameter checks
-- See <https://github.com/nasa/osal/issues/1113> and <https://github.com/nasa/cfs/pull/311>
+- See <https://github.com/nasa/osal/pull/1113> and <https://github.com/nasa/cfs/pull/311>
 
 ### Development Build: v5.1.0-rc1+dev569
 
diff --git a/src/os/inc/osapi-version.h b/src/os/inc/osapi-version.h
index d36faaa2c..e37830adb 100644
--- a/src/os/inc/osapi-version.h
+++ b/src/os/inc/osapi-version.h
@@ -36,7 +36,7 @@
 /*
  * Development Build Macro Definitions
  */
-#define OS_BUILD_NUMBER   573
+#define OS_BUILD_NUMBER   578
 #define OS_BUILD_BASELINE "v5.1.0-rc1"
 
 /*