diff --git a/libcore/date.go b/libcore/date.go
index e91ad62b6..0b05c711a 100644
--- a/libcore/date.go
+++ b/libcore/date.go
@@ -7,7 +7,7 @@ import (
 var outdated string
 
 func GetBuildTime() int64 {
-	buildDate := "20221217"
+	buildDate := "20230108"
 	buildTime, _ := time.Parse("20060102", buildDate)
 	return buildTime.Unix()
 }
diff --git a/sager.properties b/sager.properties
index c0c40b10c..d6350baf5 100644
--- a/sager.properties
+++ b/sager.properties
@@ -1,3 +1,3 @@
 PACKAGE_NAME=moe.matsuri.lite
-VERSION_NAME=0.5.8
-VERSION_CODE=169
+VERSION_NAME=0.5.9
+VERSION_CODE=170