diff --git a/hmac.release-info b/hmac.release-info
index ca96f08..1688b5f 100644
--- a/hmac.release-info
+++ b/hmac.release-info
@@ -3,4 +3,5 @@
 (uri targz "https://github.com/ThomasHintz/chicken-scheme-{egg-name}/tarball/{egg-release}")
 (release "1")
 (release "2")
-(release "3")
\ No newline at end of file
+(release "3")
+(release "4")
\ No newline at end of file
diff --git a/hmac.setup b/hmac.setup
index 6e68c48..cf01948 100644
--- a/hmac.setup
+++ b/hmac.setup
@@ -11,5 +11,5 @@
   ; Files to install for your extension:
   '("hmac.o" "hmac.so" "hmac.import.so")
   ; Assoc list with properties for your extension:
-  '((version 1)
+  '((version 4)
     (static "hmac.o"))) ;; for static linking
\ No newline at end of file