diff --git a/cmd/server/matrix.go b/cmd/server/matrix.go
index 82671d8..f0beef7 100644
--- a/cmd/server/matrix.go
+++ b/cmd/server/matrix.go
@@ -11,6 +11,7 @@ import (
 	"strings"
 	"sync"
 	"time"
+	_ "time/tzdata"
 
 	"maunium.net/go/mautrix"
 	"maunium.net/go/mautrix/crypto/cryptohelper"