diff --git a/.gitea/actions/review/action.yml b/.gitea/actions/review/action.yml
index d005697..0fdccdc 100644
--- a/.gitea/actions/review/action.yml
+++ b/.gitea/actions/review/action.yml
@@ -67,7 +67,7 @@ inputs:
     required: false
     default: 'false'
   update-existing:
-    description: 'Delete previous review from same bot before posting (default true)'
+    description: 'Delete previous review from same bot before posting. Accepts: true/1/yes or false/0/no (default true)'
     required: false
     default: 'true'
 
diff --git a/cmd/review-bot/main.go b/cmd/review-bot/main.go
index 39865b4..c9e414f 100644
--- a/cmd/review-bot/main.go
+++ b/cmd/review-bot/main.go
@@ -359,7 +359,7 @@ func envOrDefaultInt(key string, defaultVal int) int {
 }
 
 func envOrDefaultBool(key string, defaultVal bool) bool {
-	v := os.Getenv(key)
+	v := strings.TrimSpace(strings.ToLower(os.Getenv(key)))
 	if v == "" {
 		return defaultVal
 	}
diff --git a/gitea/client.go b/gitea/client.go
index f21b1d5..e8e457c 100644
--- a/gitea/client.go
+++ b/gitea/client.go
@@ -297,21 +297,32 @@ func (c *Client) GetAuthenticatedUser(ctx context.Context) (string, error) {
 }
 
 // ListReviews returns all reviews on a pull request.
+// Paginates through all pages to ensure no reviews are missed.
 func (c *Client) ListReviews(ctx context.Context, owner, repo string, number int) ([]Review, error) {
-	reqURL := fmt.Sprintf("%s/api/v1/repos/%s/%s/pulls/%d/reviews",
-		c.baseURL,
-		url.PathEscape(owner),
-		url.PathEscape(repo),
-		number)
-	body, err := c.doGet(ctx, reqURL)
-	if err != nil {
-		return nil, fmt.Errorf("list reviews: %w", err)
+	const pageSize = 50
+	var all []Review
+	for page := 1; ; page++ {
+		reqURL := fmt.Sprintf("%s/api/v1/repos/%s/%s/pulls/%d/reviews?limit=%d&page=%d",
+			c.baseURL,
+			url.PathEscape(owner),
+			url.PathEscape(repo),
+			number,
+			pageSize,
+			page)
+		body, err := c.doGet(ctx, reqURL)
+		if err != nil {
+			return nil, fmt.Errorf("list reviews (page %d): %w", page, err)
+		}
+		var batch []Review
+		if err := json.Unmarshal(body, &batch); err != nil {
+			return nil, fmt.Errorf("parse reviews (page %d): %w", page, err)
+		}
+		all = append(all, batch...)
+		if len(batch) < pageSize {
+			break
+		}
 	}
-	var reviews []Review
-	if err := json.Unmarshal(body, &reviews); err != nil {
-		return nil, fmt.Errorf("parse reviews: %w", err)
-	}
-	return reviews, nil
+	return all, nil
 }
 
 // DeleteReview deletes a review by ID. The token must belong to the review author.
diff --git a/gitea/client_test.go b/gitea/client_test.go
index fc93473..514348d 100644
--- a/gitea/client_test.go
+++ b/gitea/client_test.go
@@ -357,11 +357,17 @@ func TestGetAuthenticatedUser_EmptyLogin(t *testing.T) {
 }
 
 func TestListReviews(t *testing.T) {
+	pageCount := 0
 	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path != "/api/v1/repos/owner/repo/pulls/5/reviews" {
 			t.Errorf("unexpected path: %s", r.URL.Path)
 		}
+		if r.URL.Query().Get("limit") != "50" {
+			t.Errorf("expected limit=50, got %s", r.URL.Query().Get("limit"))
+		}
+		pageCount++
 		w.Header().Set("Content-Type", "application/json")
+		// Return 2 results (less than page size) to signal end
 		w.Write([]byte(`[{"id":10,"user":{"login":"bot-a"},"state":"APPROVED","stale":false},{"id":11,"user":{"login":"bot-b"},"state":"REQUEST_CHANGES","stale":true}]`))
 	}))
 	defer server.Close()
@@ -377,8 +383,45 @@ func TestListReviews(t *testing.T) {
 	if reviews[0].User.Login != "bot-a" {
 		t.Errorf("expected bot-a, got %s", reviews[0].User.Login)
 	}
-	if reviews[1].ID != 11 {
-		t.Errorf("expected id 11, got %d", reviews[1].ID)
+	if pageCount != 1 {
+		t.Errorf("expected 1 page fetch (results < page size), got %d", pageCount)
+	}
+}
+
+func TestListReviews_Pagination(t *testing.T) {
+	pageCount := 0
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		pageCount++
+		page := r.URL.Query().Get("page")
+		w.Header().Set("Content-Type", "application/json")
+		if page == "1" {
+			// Return exactly 50 items to trigger next page fetch
+			items := "["
+			for i := 0; i < 50; i++ {
+				if i > 0 {
+					items += ","
+				}
+				items += fmt.Sprintf(`{"id":%d,"user":{"login":"bot"},"state":"APPROVED","stale":false}`, i+1)
+			}
+			items += "]"
+			w.Write([]byte(items))
+		} else {
+			// Page 2: return fewer than 50 to signal end
+			w.Write([]byte(`[{"id":51,"user":{"login":"bot"},"state":"APPROVED","stale":false}]`))
+		}
+	}))
+	defer server.Close()
+
+	client := NewClient(server.URL, "test-token")
+	reviews, err := client.ListReviews(context.Background(), "owner", "repo", 5)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if len(reviews) != 51 {
+		t.Fatalf("expected 51 reviews across 2 pages, got %d", len(reviews))
+	}
+	if pageCount != 2 {
+		t.Errorf("expected 2 page fetches, got %d", pageCount)
 	}
 }