diff --git a/LATEST.VER b/LATEST.VER
index b17d9547..179d3054 100644
--- a/LATEST.VER
+++ b/LATEST.VER
@@ -1 +1 @@
-0.54
+0.55
diff --git a/mac/version.r b/mac/version.r
index fa7aae2e..e175cb83 100644
--- a/mac/version.r
+++ b/mac/version.r
@@ -2,7 +2,7 @@
  * Current PuTTY version number.  Minor is in BCD
  */
 #define VERSION_MAJOR 0x00
-#define VERSION_MINOR 0x54
+#define VERSION_MINOR 0x55
 
 resource 'vers' (1, purgeable) {
 #ifdef RELEASE
diff --git a/putty.iss b/putty.iss
index 798348b8..3f0099b9 100644
--- a/putty.iss
+++ b/putty.iss
@@ -19,7 +19,7 @@
 
 [Setup]
 AppName=PuTTY
-AppVerName=PuTTY version 0.54
+AppVerName=PuTTY version 0.55
 DefaultDirName={pf}\PuTTY
 DefaultGroupName=PuTTY
 UninstallDisplayIcon={app}\putty.exe