diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 37130e8..85e0ca0 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,7 +1,7 @@
 [bumpversion]
 commit = True
 tag = True
-current_version = 1.5.27
+current_version = 1.5.28
 message = Bump version: {current_version} → {new_version} [skip ci]
 
 [bumpversion:file:src/main.py]
diff --git a/src/main.py b/src/main.py
index fa76f9f..0f7db97 100644
--- a/src/main.py
+++ b/src/main.py
@@ -42,7 +42,7 @@
 folder = os.path.dirname(os.path.abspath(__file__))
 
 title = "Quartz Solar API"
-version = "1.5.27"
+version = "1.5.28"
 
 sentry_sdk.init(
     dsn=os.getenv("SENTRY_DSN"),