diff --git a/pjlib/include/pj/config.h b/pjlib/include/pj/config.h
index 5f537474f9..bf17340b79 100644
--- a/pjlib/include/pj/config.h
+++ b/pjlib/include/pj/config.h
@@ -1402,7 +1402,7 @@ PJ_BEGIN_DECL
 #define PJ_VERSION_NUM_MINOR	12
 
 /** PJLIB version revision number. */
-#define PJ_VERSION_NUM_REV      0
+#define PJ_VERSION_NUM_REV      1
 
 /**
  * Extra suffix for the version (e.g. "-trunk"), or empty for
diff --git a/version.mak b/version.mak
index 9fca5525c0..9941c9b5fa 100644
--- a/version.mak
+++ b/version.mak
@@ -1,7 +1,7 @@
 # Don't change the "export PJ_VERSION_xxx" style, they are parsed by setup.py
 export PJ_VERSION_MAJOR  := 2
 export PJ_VERSION_MINOR  := 12
-export PJ_VERSION_REV    :=
+export PJ_VERSION_REV    := 1
 export PJ_VERSION_SUFFIX :=
 
 export PJ_VERSION := $(PJ_VERSION_MAJOR).$(PJ_VERSION_MINOR)