diff --git a/Makefile b/Makefile
index 24fdab8..9c72b6f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,12 @@
 # test-analyzer:
 # 	raco make -v --disable-inline test-analyzer.rkt
 # 	racket test-analyzer.rkt
-all: planet-link launcher setup
+all: bump-version planet-link launcher setup
 
 
+bump-version:
+	racket bump-version.rkt
+
 launcher: 
 	racket make-launcher.rkt
 
diff --git a/bump-version.rkt b/bump-version.rkt
new file mode 100644
index 0000000..18bcf97
--- /dev/null
+++ b/bump-version.rkt
@@ -0,0 +1,20 @@
+#lang racket/base
+
+(require racket/runtime-path
+	 racket/port
+	 racket/list)
+
+(define-runtime-path version.rkt "version.rkt")
+
+(define version-text (call-with-input-file version.rkt port->string))
+
+(define revised-text (regexp-replace #px"\\.(\\d+)"
+				     version-text
+				     (lambda (whole sub)
+				       (string-append 
+					"."
+					(number->string 
+					 (add1 (string->number sub)))))))
+  
+(call-with-output-file version.rkt (lambda (op) (display revised-text op))
+		       #:exists 'replace)
\ No newline at end of file
diff --git a/version.rkt b/version.rkt
index 19fdaa0..1b37d28 100644
--- a/version.rkt
+++ b/version.rkt
@@ -1,4 +1,9 @@
 #lang typed/racket/base
+
+;; This is an internal version string.  It should have no external meaning.
+;; This file is touched by "bump.version.rkt": do not edit this file manually unless
+;; you really know what you're doing.
+
 (provide version)
 (: version String)
-(define version "1.0")
+(define version "1.5")