diff --git a/README.md b/README.md
index 4fb5eba..4afe9f3 100644
--- a/README.md
+++ b/README.md
@@ -128,6 +128,10 @@ Publications
 Change Log
 ----------
 
+**Recorder 2.2.0** Jan 25, 2021
+1. Add support for MPI_Cart_sub, MPI_Comm_split_type, etc.
+2. Assign each MPI_Comm object a globally unique id.
+
 **Recorder 2.1.9** Jan 14, 2021
 1. Clean up the code
 2. Fixed a few memory leak issues
diff --git a/configure.ac b/configure.ac
index 36769cf..e3726fe 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([Recorder], 2.1.9)
+AC_INIT([Recorder], 2.2.0)
 
 AC_PROG_CC([mpicc cc])
 AC_PROG_CXX([mpicxx CC])
diff --git a/lib/recorder-logger.c b/lib/recorder-logger.c
index 663335e..6ae2a54 100644
--- a/lib/recorder-logger.c
+++ b/lib/recorder-logger.c
@@ -9,7 +9,7 @@
 #define TIME_RESOLUTION 0.000001
 #define RECORD_WINDOW_SIZE 3                    // A sliding window for peephole compression
 #define MEMBUF_SIZE 6*1024*1024                 // Memory buffer size, default 6MB
-#define VERSION_STR "2.1.9"
+#define VERSION_STR "2.2.0"
 
 
 struct RecorderLogger {