diff --git a/src/storage/feedstate.go b/src/storage/feedstate.go
new file mode 100644
index 0000000..e887373
--- /dev/null
+++ b/src/storage/feedstate.go
@@ -0,0 +1,31 @@
+package storage
+
+import "time"
+
+type FeedState struct {
+	LastRefreshed time.Time
+	LastError     string
+
+	HTTPLastModified string
+	HTTPEtag         string
+}
+
+func (s *Storage) ListFeedStates() ([]FeedState, error) {
+	// TODO: implement
+}
+
+func (s *Storage) GetFeedState() (FeedState, error) {
+	// TODO: implement
+}
+
+type UpdateFeedStateParams struct {
+	LastRefreshed *time.Time
+	LastError *string
+
+	HTTPLastModified *string
+	HTTPEtag *string
+}
+
+func (s *Storage) UpdateFeedState(params UpdateFeedStateParams) (bool, error) {
+	// TODO: implement
+}
diff --git a/src/storage/feedstate_test.go b/src/storage/feedstate_test.go
new file mode 100644
index 0000000..e69de29