diff --git a/lib/resourcemerge/core.go b/lib/resourcemerge/core.go
index 155351930..aaad5b59f 100644
--- a/lib/resourcemerge/core.go
+++ b/lib/resourcemerge/core.go
@@ -164,6 +164,10 @@ func ensureProbePtr(modified *bool, existing **corev1.Probe, required *corev1.Pr
 
 func ensureProbe(modified *bool, existing *corev1.Probe, required corev1.Probe) {
 	setInt32(modified, &existing.InitialDelaySeconds, required.InitialDelaySeconds)
+	setInt32(modified, &existing.TimeoutSeconds, required.TimeoutSeconds)
+	setInt32(modified, &existing.PeriodSeconds, required.PeriodSeconds)
+	setInt32(modified, &existing.SuccessThreshold, required.SuccessThreshold)
+	setInt32(modified, &existing.FailureThreshold, required.FailureThreshold)
 
 	ensureProbeHandler(modified, &existing.Handler, required.Handler)
 }
diff --git a/lib/resourcemerge/core_test.go b/lib/resourcemerge/core_test.go
index d9cac7a2d..eda22e119 100644
--- a/lib/resourcemerge/core_test.go
+++ b/lib/resourcemerge/core_test.go
@@ -359,6 +359,98 @@ func TestEnsurePodSpec(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "modify container readiness probe",
+			existing: corev1.PodSpec{
+				Containers: []corev1.Container{
+					{
+						Name: "test",
+						ReadinessProbe: &corev1.Probe{
+							InitialDelaySeconds: 1,
+							TimeoutSeconds:      2,
+							PeriodSeconds:       3,
+							SuccessThreshold:    4,
+							FailureThreshold:    5,
+						},
+					},
+				},
+			},
+			input: corev1.PodSpec{
+				Containers: []corev1.Container{
+					{
+						Name: "test",
+						ReadinessProbe: &corev1.Probe{
+							InitialDelaySeconds: 7,
+							TimeoutSeconds:      8,
+							PeriodSeconds:       9,
+							SuccessThreshold:    10,
+							FailureThreshold:    11,
+						},
+					},
+				},
+			},
+			expectedModified: true,
+			expected: corev1.PodSpec{
+				Containers: []corev1.Container{
+					{
+						Name: "test",
+						ReadinessProbe: &corev1.Probe{
+							InitialDelaySeconds: 7,
+							TimeoutSeconds:      8,
+							PeriodSeconds:       9,
+							SuccessThreshold:    10,
+							FailureThreshold:    11,
+						},
+					},
+				},
+			},
+		},
+		{
+			name: "modify container liveness probe",
+			existing: corev1.PodSpec{
+				Containers: []corev1.Container{
+					{
+						Name: "test",
+						LivenessProbe: &corev1.Probe{
+							InitialDelaySeconds: 1,
+							TimeoutSeconds:      2,
+							PeriodSeconds:       3,
+							SuccessThreshold:    4,
+							FailureThreshold:    5,
+						},
+					},
+				},
+			},
+			input: corev1.PodSpec{
+				Containers: []corev1.Container{
+					{
+						Name: "test",
+						LivenessProbe: &corev1.Probe{
+							InitialDelaySeconds: 7,
+							TimeoutSeconds:      8,
+							PeriodSeconds:       9,
+							SuccessThreshold:    10,
+							FailureThreshold:    11,
+						},
+					},
+				},
+			},
+			expectedModified: true,
+			expected: corev1.PodSpec{
+				Containers: []corev1.Container{
+					{
+						Name: "test",
+						LivenessProbe: &corev1.Probe{
+							InitialDelaySeconds: 7,
+							TimeoutSeconds:      8,
+							PeriodSeconds:       9,
+							SuccessThreshold:    10,
+							FailureThreshold:    11,
+						},
+					},
+				},
+			},
+		},
 	}
 
 	for _, test := range tests {