diff --git a/src/git_flow/command/tag.py b/src/git_flow/command/tag.py
index 4fcac5c..3d3d862 100644
--- a/src/git_flow/command/tag.py
+++ b/src/git_flow/command/tag.py
@@ -104,4 +104,4 @@ class TagCommand(Command):
         elif increment == SEMVER_PATCH:
             patch += 1
 
-        return None if increment == SEMVER_SKIP else f"v{major}.{minor}.{patch}{suffix}"
+        return None if increment == SEMVER_SKIP else f"v{major}.{minor}.{patch}-{suffix}"