diff --git a/appveyor.yml b/appveyor.yml
index 3dd5ed77..0d8bb2fc 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
 version:
-    0.39.{build}
+    0.40.{build}
 
 image:
     - Visual Studio 2019
diff --git a/src/PerfectHashVersion.rc b/src/PerfectHashVersion.rc
index 1822da5e..08f28c16 100644
--- a/src/PerfectHashVersion.rc
+++ b/src/PerfectHashVersion.rc
@@ -23,11 +23,11 @@ Abstract:
 #define VER_DEBUG 0
 #endif
 
-#define VER_FILEVERSION 0,39,0,0
-#define VER_FILEVERSION_STR "v0.39"
+#define VER_FILEVERSION 0,40,0,0
+#define VER_FILEVERSION_STR "v0.40"
 
-#define VER_PRODUCTVERSION 0,39,0,0
-#define VER_PRODUCTVERSION_STR "v0.39"
+#define VER_PRODUCTVERSION 0,40,0,0
+#define VER_PRODUCTVERSION_STR "v0.40"
 
 #define VER_FILEFLAGS (VS_FF_PRERELEASE|VER_DEBUG)