diff --git a/bundle/config/resources/job.go b/bundle/config/resources/job.go
index edda8a921..bf29106a0 100644
--- a/bundle/config/resources/job.go
+++ b/bundle/config/resources/job.go
@@ -41,7 +41,7 @@ func (j *Job) MergeJobClusters() error {
 		ref, ok := keys[key]
 		if !ok {
 			output = append(output, j.JobClusters[i])
-			keys[key] = &j.JobClusters[i]
+			keys[key] = &output[len(output)-1]
 			continue
 		}
 
@@ -74,7 +74,7 @@ func (j *Job) MergeTasks() error {
 		ref, ok := keys[key]
 		if !ok {
 			tasks = append(tasks, j.Tasks[i])
-			keys[key] = &j.Tasks[i]
+			keys[key] = &tasks[len(tasks)-1]
 			continue
 		}
 
diff --git a/bundle/config/resources/job_test.go b/bundle/config/resources/job_test.go
index 818d2ac21..24b82fabb 100644
--- a/bundle/config/resources/job_test.go
+++ b/bundle/config/resources/job_test.go
@@ -67,6 +67,9 @@ func TestJobMergeTasks(t *testing.T) {
 						NodeTypeId:   "i3.xlarge",
 						NumWorkers:   2,
 					},
+					Libraries: []compute.Library{
+						{Whl: "package1"},
+					},
 				},
 				{
 					TaskKey: "bar",
@@ -80,6 +83,11 @@ func TestJobMergeTasks(t *testing.T) {
 						NodeTypeId: "i3.2xlarge",
 						NumWorkers: 4,
 					},
+					Libraries: []compute.Library{
+						{Pypi: &compute.PythonPyPiLibrary{
+							Package: "package2",
+						}},
+					},
 				},
 			},
 		},
@@ -93,10 +101,14 @@ func TestJobMergeTasks(t *testing.T) {
 	assert.Equal(t, "bar", j.Tasks[1].TaskKey)
 
 	// This task was merged with a subsequent one.
-	task0 := j.Tasks[0].NewCluster
-	assert.Equal(t, "13.3.x-scala2.12", task0.SparkVersion)
-	assert.Equal(t, "i3.2xlarge", task0.NodeTypeId)
-	assert.Equal(t, 4, task0.NumWorkers)
+	task0 := j.Tasks[0]
+	cluster := task0.NewCluster
+	assert.Equal(t, "13.3.x-scala2.12", cluster.SparkVersion)
+	assert.Equal(t, "i3.2xlarge", cluster.NodeTypeId)
+	assert.Equal(t, 4, cluster.NumWorkers)
+	assert.Len(t, task0.Libraries, 2)
+	assert.Equal(t, task0.Libraries[0].Whl, "package1")
+	assert.Equal(t, task0.Libraries[1].Pypi.Package, "package2")
 
 	// This task was left untouched.
 	task1 := j.Tasks[1].NewCluster