diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2487056143..141213cd70 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 Changes by Version
 ==================
 
+0.15.0 (2020-11-27)
+-------------------
+* Bumped OpenTelemetry Collector to v0.15.0 ([#131](https://github.com/open-telemetry/opentelemetry-operator/pull/131), [@jpkrohling](https://github.com/jpkrohling)) 
+
 0.14.0 (2020-11-09)
 -------------------
 * Bumped OpenTelemetry Collector to v0.14.0 ([#112](https://github.com/open-telemetry/opentelemetry-operator/pull/112), [@jpkrohling](https://github.com/jpkrohling)) 
diff --git a/pkg/collector/upgrade/v0_15_0.go b/pkg/collector/upgrade/v0_15_0.go
new file mode 100644
index 0000000000..188888b9e2
--- /dev/null
+++ b/pkg/collector/upgrade/v0_15_0.go
@@ -0,0 +1,13 @@
+package upgrade
+
+import (
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	"github.com/open-telemetry/opentelemetry-operator/api/v1alpha1"
+)
+
+func upgrade0_15_0(cl client.Client, otelcol *v1alpha1.OpenTelemetryCollector) (*v1alpha1.OpenTelemetryCollector, error) {
+	delete(otelcol.Spec.Args, "--new-metrics")
+	delete(otelcol.Spec.Args, "--legacy-metrics")
+	return otelcol, nil
+}
diff --git a/pkg/collector/upgrade/v0_15_0_test.go b/pkg/collector/upgrade/v0_15_0_test.go
new file mode 100644
index 0000000000..90e0218359
--- /dev/null
+++ b/pkg/collector/upgrade/v0_15_0_test.go
@@ -0,0 +1,49 @@
+package upgrade_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+
+	"github.com/open-telemetry/opentelemetry-operator/api/v1alpha1"
+	"github.com/open-telemetry/opentelemetry-operator/internal/version"
+	"github.com/open-telemetry/opentelemetry-operator/pkg/collector/upgrade"
+)
+
+func TestRemoveMetricsTypeFlags(t *testing.T) {
+	// prepare
+	nsn := types.NamespacedName{Name: "my-instance", Namespace: "default"}
+	existing := v1alpha1.OpenTelemetryCollector{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      nsn.Name,
+			Namespace: nsn.Namespace,
+			Labels: map[string]string{
+				"app.kubernetes.io/managed-by": "opentelemetry-operator",
+			},
+		},
+		Spec: v1alpha1.OpenTelemetryCollectorSpec{
+			Args: map[string]string{
+				// this would not happen in the real world, as it's either one or another, but we aren't going that far
+				"--new-metrics":    "true",
+				"--legacy-metrics": "true",
+			},
+		},
+	}
+	existing.Status.Version = "0.9.0"
+
+	// sanity check
+	require.Contains(t, existing.Spec.Args, "--new-metrics")
+	require.Contains(t, existing.Spec.Args, "--legacy-metrics")
+
+	// test
+	res, err := upgrade.ManagedInstance(context.Background(), logger, version.Get(), nil, existing)
+	assert.NoError(t, err)
+
+	// verify
+	assert.NotContains(t, res.Spec.Args, "--new-metrics")
+	assert.NotContains(t, res.Spec.Args, "--legacy-metrics")
+}
diff --git a/pkg/collector/upgrade/versions.go b/pkg/collector/upgrade/versions.go
index 81df33be85..da3feedcec 100644
--- a/pkg/collector/upgrade/versions.go
+++ b/pkg/collector/upgrade/versions.go
@@ -24,6 +24,10 @@ var (
 			Version: *semver.MustParse("0.9.0"),
 			upgrade: upgrade0_9_0,
 		},
+		{
+			Version: *semver.MustParse("0.15.0"),
+			upgrade: upgrade0_15_0,
+		},
 	}
 
 	// Latest represents the latest version that we need to upgrade. This is not necessarily the latest known version.
diff --git a/versions.txt b/versions.txt
index 44820f1033..eb4d9a3956 100644
--- a/versions.txt
+++ b/versions.txt
@@ -2,7 +2,7 @@
 # by default with the OpenTelemetry Operator. This would usually be the latest
 # stable OpenTelemetry version. When you update this file, make sure to update the
 # the docs as well.
-opentelemetry-collector=0.14.0
+opentelemetry-collector=0.15.0
 
 # Represents the next release of the OpenTelemetry Operator.
-operator=0.14.0
+operator=0.15.0