diff --git a/README.md b/README.md
index 9caafdb..765bb71 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,11 @@ To change the list of packets that sch_lab sends out, edit the schedule table lo
 
 ## Version History
 
+### Development Build: 2.4.0-rc1+dev9
+
+- Update to use MSG module. Replaces deprecated SB APIs with MSG
+- See <https://github.com/nasa/sch_lab/pull/58>
+
 ### Development Build: 2.4.0-rc1+dev6
 
 - Adds header guard (the other warning on the ticket was already resolved)
diff --git a/fsw/src/sch_lab_app.c b/fsw/src/sch_lab_app.c
index bf5e25e..adf005d 100644
--- a/fsw/src/sch_lab_app.c
+++ b/fsw/src/sch_lab_app.c
@@ -49,17 +49,11 @@
 /*
 ** Global Structure
 */
-typedef union
-{
-    CFE_SB_Msg_t    MsgHdr;
-    CFE_SB_CmdHdr_t CommandHeader;
-} SCH_LAB_MessageBuffer_t;
-
 typedef struct
 {
-    SCH_LAB_MessageBuffer_t MsgBuf;
-    uint32                  PacketRate;
-    uint32                  Counter;
+    CFE_SB_CmdHdr_t CmdBuf;
+    uint32          PacketRate;
+    uint32          Counter;
 } SCH_LAB_StateEntry_t;
 
 typedef struct
@@ -67,8 +61,8 @@ typedef struct
     SCH_LAB_StateEntry_t State[SCH_LAB_MAX_SCHEDULE_ENTRIES];
     CFE_TBL_Handle_t     TblHandle;
 
-    CFE_SB_Msg_t *  CmdPipePktPtr;
-    CFE_SB_PipeId_t CmdPipe;
+    CFE_MSG_Message_t *CmdPipePktPtr;
+    CFE_SB_PipeId_t    CmdPipe;
 
 } SCH_LAB_GlobalData_t;
 
@@ -128,7 +122,7 @@ void SCH_Lab_AppMain(void)
                     if (LocalStateEntry->Counter >= LocalStateEntry->PacketRate)
                     {
                         LocalStateEntry->Counter = 0;
-                        CFE_SB_SendMsg(&LocalStateEntry->MsgBuf.MsgHdr);
+                        CFE_SB_SendMsg(&LocalStateEntry->CmdBuf.BaseMsg);
                     }
                 }
                 ++LocalStateEntry;
@@ -204,8 +198,7 @@ int32 SCH_LAB_AppInit(void)
     {
         if (ConfigEntry->PacketRate != 0)
         {
-            CFE_SB_InitMsg(&LocalStateEntry->MsgBuf.MsgHdr, ConfigEntry->MessageID, sizeof(LocalStateEntry->MsgBuf),
-                           true);
+            CFE_MSG_Init(&LocalStateEntry->CmdBuf.BaseMsg, ConfigEntry->MessageID, sizeof(LocalStateEntry->CmdBuf));
             LocalStateEntry->PacketRate = ConfigEntry->PacketRate;
         }
         ++ConfigEntry;
diff --git a/fsw/src/sch_lab_version.h b/fsw/src/sch_lab_version.h
index 2742f7c..42e2ef0 100644
--- a/fsw/src/sch_lab_version.h
+++ b/fsw/src/sch_lab_version.h
@@ -30,7 +30,7 @@
  */
 
 /* Development Build Macro Definitions */
-#define SCH_LAB_BUILD_NUMBER 6 /*!< Development Build: Number of commits since baseline */
+#define SCH_LAB_BUILD_NUMBER 9 /*!< Development Build: Number of commits since baseline */
 #define SCH_LAB_BUILD_BASELINE "v2.4.0-rc1" /*!< Development Build: git tag that is the base for the current development */
 
 /* Version Macro Definitions */