diff --git a/index.js b/index.js
index 21464b5..a258693 100644
--- a/index.js
+++ b/index.js
@@ -93,6 +93,9 @@ class ConventionalChangelog extends Plugin {
           ) {
             return semver.inc(latestVersion, `pre${releaseTypeToLastNonPrerelease}`, preReleaseId);
           }
+          else {
+            return semver.inc(lastStableTag, `pre${releaseTypeToLastNonPrerelease}`, preReleaseId);
+          }
         }
 
         return semver.inc(latestVersion, 'prerelease', preReleaseId);