diff --git a/common/gitea_utils.go b/common/gitea_utils.go
index ccaed15..57e8e2f 100644
--- a/common/gitea_utils.go
+++ b/common/gitea_utils.go
@@ -76,6 +76,7 @@ type GiteaLabelSettter interface {
 }
 
 type GiteaTimelineFetcher interface {
+	ResetTimelineCache(org, repo string, idx int64)
 	GetTimeline(org, repo string, idx int64) ([]*models.TimelineComment, error)
 }
 
@@ -813,6 +814,17 @@ type TimelineCacheData struct {
 var giteaTimelineCache map[string]TimelineCacheData = make(map[string]TimelineCacheData)
 var giteaTimelineCacheMutex sync.RWMutex
 
+func (gitea *GiteaTransport) ResetTimelineCache(org, repo string, idx int64) {
+	giteaTimelineCacheMutex.Lock()
+	defer giteaTimelineCacheMutex.Unlock()
+
+	prID := fmt.Sprintf("%s/%s!%d", org, repo, idx)
+	Cache, IsCached := giteaTimelineCache[prID]
+	if IsCached {
+		Cache.lastCheck = Cache.lastCheck.Add(-time.Hour)
+	}
+}
+
 // returns timeline in reverse chronological create order
 func (gitea *GiteaTransport) GetTimeline(org, repo string, idx int64) ([]*models.TimelineComment, error) {
 	page := int64(1)
diff --git a/common/pr.go b/common/pr.go
index b6d9e0d..54ca80b 100644
--- a/common/pr.go
+++ b/common/pr.go
@@ -160,6 +160,8 @@ func FetchPRSet(user string, gitea GiteaPRTimelineReviewFetcher, org, repo strin
 	var pr *models.PullRequest
 	var err error
 
+	gitea.ResetTimelineCache(org, repo, num)
+
 	prjGitOrg, prjGitRepo, _ := config.GetPrjGit()
 	if prjGitOrg == org && prjGitRepo == repo {
 		if pr, err = gitea.GetPullRequest(org, repo, num); err != nil {
@@ -184,6 +186,7 @@ func FetchPRSet(user string, gitea GiteaPRTimelineReviewFetcher, org, repo strin
 
 	for _, pr := range prs {
 		org, repo, idx := pr.PRComponents()
+		gitea.ResetTimelineCache(org, repo, idx)
 		reviews, err := FetchGiteaReviews(gitea, org, repo, idx)
 		if err != nil {
 			LogError("Error fetching reviews for", PRtoString(pr.PR), ":", err)