diff --git a/src/StreamVersion.c b/src/StreamVersion.c
index 8795910..a786330 100644
--- a/src/StreamVersion.c
+++ b/src/StreamVersion.c
@@ -23,6 +23,7 @@
 #define STR2(x) #x
 #define STR(x) STR2(x)
 const char StreamVersion [] =
-    "StreamDevice " STR(STREAM_MAJOR) "." STR(STREAM_MINOR)
+    "StreamDevice " STR(STREAM_MAJOR)
+    "." STR(STREAM_MINOR)
+    "." STR(STREAM_PATCHLEVEL)
     " built " __DATE__ " " __TIME__;
-
diff --git a/src/devStream.h b/src/devStream.h
index e9be3ed..d3a8438 100644
--- a/src/devStream.h
+++ b/src/devStream.h
@@ -23,6 +23,7 @@
 
 #define STREAM_MAJOR 2
 #define STREAM_MINOR 5
+#define STREAM_PATCHLEVEL 10
 
 #if defined(__vxworks) || defined(vxWorks)
 #include <vxWorks.h>