diff --git a/guile.yaml b/guile.yaml
index c7fe67f..36e5683 100644
--- a/guile.yaml
+++ b/guile.yaml
@@ -1,4 +1,4 @@
 version_control: git
 src_repo: https://git.savannah.gnu.org/git/guile.git
-tag_prefix: 
-seperator: 
+tag_prefix: ^guile-
+seperator: "."