diff --git a/internal/aggregator/aggregator.go b/internal/aggregator/aggregator.go
index a257174..2ecbc37 100644
--- a/internal/aggregator/aggregator.go
+++ b/internal/aggregator/aggregator.go
@@ -383,6 +383,13 @@ func (a *Aggregator) Aggregate(data *models.RawData, dateRange *config.ParsedDat
 		if !contains(cm.RepositoriesContributed, issue.Repository) {
 			cm.RepositoriesContributed = append(cm.RepositoriesContributed, issue.Repository)
 		}
+
+		// Update per-repo contributor metrics
+		rcm := getRepoContributor(issue.Repository, login, cm.Name, cm.AvatarURL)
+		rcm.IssuesOpened++
+		if issue.IsClosed() && issue.ClosedBy != nil && issue.ClosedBy.Login == login {
+			rcm.IssuesClosed++
+		}
 	}
 
 	// Calculate averages and finalize contributor metrics
diff --git a/internal/domain/scoring/calculator_test.go b/internal/domain/scoring/calculator_test.go
index 03509d5..9aa7a86 100644
--- a/internal/domain/scoring/calculator_test.go
+++ b/internal/domain/scoring/calculator_test.go
@@ -646,9 +646,10 @@ func TestCalculator_MultipleRepositories(t *testing.T) {
 	// 50 + 30 = 80 commits * 10 = 800
 	assert.Equal(t, 800, result.Leaderboard[0].Score)
 
-	// Both repos should be tracked
+	// Per-repo scores should reflect repo-specific metrics, not global
+	// Repo1 has 50 commits * 10 = 500
 	contributor := result.Repositories[0].Contributors[0]
-	assert.Equal(t, 800, contributor.Score.Total)
+	assert.Equal(t, 500, contributor.Score.Total)
 }
 
 func TestCalculator_EmptyMetrics(t *testing.T) {
diff --git a/internal/generator/site/generator_test.go b/internal/generator/site/generator_test.go
index 763a648..2be0acd 100644
--- a/internal/generator/site/generator_test.go
+++ b/internal/generator/site/generator_test.go
@@ -100,7 +100,7 @@ func TestGenerator_GenerateGlobalJSON(t *testing.T) {
 		TotalReviews      int       `json:"total_reviews"`
 		TotalLinesAdded   int       `json:"total_lines_added"`
 		TotalLinesDeleted int       `json:"total_lines_deleted"`
-		GeneratedAt       time.Time `json:"GeneratedAt"`
+		GeneratedAt       time.Time `json:"generated_at"`
 	}
 	err = json.Unmarshal(data, &result)
 	require.NoError(t, err)