diff --git a/src/cache/cache.go b/src/cache/cache.go
index 42a4909..8396203 100644
--- a/src/cache/cache.go
+++ b/src/cache/cache.go
@@ -18,7 +18,7 @@ import (
 	"time"
 )
 
-var filepattern = regexp.MustCompile(`((In)?Release(\.gpg)?|Packages(\.gz|\.bz2)?|Contents-(arm64|armhf|amd64)(\.gz)|Sources.bz2?)`)
+var filepattern = regexp.MustCompile(`((In)?Release(\.gpg)?|Packages(\.gz|\.bz2)?|Contents-(arm64|armhf|amd64)(\.gz)|Sources(\.gz|\.bz2)?)`)
 
 // Reader is a generic interface for reading cache entries either from disk or
 // directly attached to a downloader.