diff --git a/src/os/inc/osapi-version.h b/src/os/inc/osapi-version.h
index 84ac26ce8..cd5f6f862 100644
--- a/src/os/inc/osapi-version.h
+++ b/src/os/inc/osapi-version.h
@@ -34,8 +34,11 @@
 /*
  * Development Build Macro Definitions
  */
-#define OS_BUILD_NUMBER   247
-#define OS_BUILD_BASELINE "v6.0.0-rc4"
+#define OS_BUILD_NUMBER     247
+#define OS_BUILD_BASELINE   "equuleus-rc1"
+#define OS_BUILD_DEV_CYCLE  "equuleus-rc2" /**< @brief Development: Release name for current development cycle */
+#define OS_BUILD_TYPE       "Development Build" /**< @brief: Development: Type of build (Development Build or Release) */
+#define OS_BUILD_CODENAME   "Equuleus" /**< @brief: Development: Code name for the current build */
 
 /*
  * Version Macros, see \ref cfsversions for definitions.
@@ -44,6 +47,11 @@
 #define OS_MINOR_VERSION 0  /*!< @brief Minor version number */
 #define OS_REVISION      99 /*!< @brief Revision version number. Value of 99 indicates a development version.*/
 
+/**
+ * @brief Last official release.
+ */
+#define OS_LAST_OFFICIAL "v5.0.0"
+
 /*!
  * @brief Mission revision.
  *
@@ -51,7 +59,7 @@
  * Values 1-254 are reserved for mission use to denote patches/customizations as needed. NOTE: Reserving 0 and 0xFF for
  * cFS open-source development use (pending resolution of nasa/cFS#440)
  */
-#define OS_MISSION_REV 0xFF
+#define OS_MISSION_REV 0x00
 
 /*
  * Tools to construct version string
@@ -69,15 +77,6 @@
  */
 #define OS_VERSION_CODENAME "Draco"
 
-/*! @brief Development Build Version String.
- * @details Reports the current development build's baseline, number, and name. Also includes a note about the latest
- * official version.
- */
-#define OS_VERSION_STRING                                                                          \
-    " OSAL Development Build\n"                                                                    \
-    " " OS_VERSION " (Codename: " OS_VERSION_CODENAME ")\n" /* Codename for current development */ \
-    " Latest Official Version: osal v5.0.0"                 /* For full support please use official release version */
-
 /*! @brief Combines the revision components into a single value
  * @details Applications can check against this number @n
  * e.g. "#if OSAL_API_VERSION >= 40100" would check if some feature added in
@@ -152,4 +151,12 @@ void OS_GetVersionNumber(uint8 VersionNumbers[4]);
  */
 uint32 OS_GetBuildNumber(void);
 
+/**
+ * @brief Max Version String length.
+ * 
+ * Maximum length that an OSAL version string can be.
+ * 
+ */
+#define OS_CFG_MAX_VERSION_STR_LEN 256
+
 #endif /* OSAPI_VERSION_H */