diff --git a/docs/additional-configs.md b/docs/additional-configs.md
index 3e517eec5fa..dc7473fc0c6 100644
--- a/docs/additional-configs.md
+++ b/docs/additional-configs.md
@@ -375,7 +375,6 @@ Features currently in "alpha" are:
 | [Hermetic Execution Mode](./hermetic.md)                                                                     | [TEP-0025](https://github.com/tektoncd/community/blob/main/teps/0025-hermekton.md)                                   | [v0.25.0](https://github.com/tektoncd/pipeline/releases/tag/v0.25.0) |                                                  |
 | [Windows Scripts](./tasks.md#windows-scripts)                                                                | [TEP-0057](https://github.com/tektoncd/community/blob/main/teps/0057-windows-support.md)                             | [v0.28.0](https://github.com/tektoncd/pipeline/releases/tag/v0.28.0) |                                                  |
 | [Debug](./debug.md)                                                                                          | [TEP-0042](https://github.com/tektoncd/community/blob/main/teps/0042-taskrun-breakpoint-on-failure.md)               | [v0.26.0](https://github.com/tektoncd/pipeline/releases/tag/v0.26.0) |                                                  |
-| [Step and Sidecar Overrides](./taskruns.md#overriding-task-steps-and-sidecars)                               | [TEP-0094](https://github.com/tektoncd/community/blob/main/teps/0094-specifying-resource-requirements-at-runtime.md) | [v0.34.0](https://github.com/tektoncd/pipeline/releases/tag/v0.34.0) |                                                  |
 | [StdoutConfig and StderrConfig](./tasks#redirecting-step-output-streams-with-stdoutConfig-and-stderrConfig) | [TEP-0011](https://github.com/tektoncd/community/blob/main/teps/0011-redirecting-step-output-streams.md)             | [v0.38.0](https://github.com/tektoncd/pipeline/releases/tag/v0.38.0) |                                                  |
 | [Trusted Resources](./trusted-resources.md)                                                                  | [TEP-0091](https://github.com/tektoncd/community/blob/main/teps/0091-trusted-resources.md)                           | [v0.49.0](https://github.com/tektoncd/pipeline/releases/tag/v0.49.0) | `trusted-resources-verification-no-match-policy` |
 | [Configure Default Resolver](./resolution.md#configuring-built-in-resolvers)                                 | [TEP-0133](https://github.com/tektoncd/community/blob/main/teps/0133-configure-default-resolver.md)                  | [v0.46.0](https://github.com/tektoncd/pipeline/releases/tag/v0.46.0) |                                                  |
@@ -403,6 +402,7 @@ Features currently in "beta" are:
 | [Task-level Resource Requirements](compute-resources.md#task-level-compute-resources-configuration)   | [TEP-0104](https://github.com/tektoncd/community/blob/main/teps/0104-tasklevel-resource-requirements.md) | [v0.39.0](https://github.com/tektoncd/pipeline/releases/tag/v0.39.0) | [v0.53.0](https://github.com/tektoncd/pipeline/releases/tag/v0.53.0) |                               |
 | [Reusable Steps via StepActions](./stepactions.md)                                                           | [TEP-0142](https://github.com/tektoncd/community/blob/main/teps/0142-enable-step-reusability.md)                     | [v0.54.0](https://github.com/tektoncd/pipeline/releases/tag/v0.54.0) | `enable-step-actions`                            |
 | [Larger Results via Sidecar Logs](#enabling-larger-results-using-sidecar-logs)                               | [TEP-0127](https://github.com/tektoncd/community/blob/main/teps/0127-larger-results-via-sidecar-logs.md)             | [v0.43.0](https://github.com/tektoncd/pipeline/releases/tag/v0.43.0) | [v0.61.0](https://github.com/tektoncd/pipeline/releases/tag/v0.61.0) | `results-from`                                   |
+| [Step and Sidecar Overrides](./taskruns.md#overriding-task-steps-and-sidecars)                               | [TEP-0094](https://github.com/tektoncd/community/blob/main/teps/0094-specifying-resource-requirements-at-runtime.md) | [v0.34.0](https://github.com/tektoncd/pipeline/releases/tag/v0.34.0) |                                                  | [v0.61.0](https://github.com/tektoncd/pipeline/releases/tag/v0.61.0)  |
 
 ## Enabling larger results using sidecar logs
 
diff --git a/docs/taskruns.md b/docs/taskruns.md
index d689b69f3ec..8e0a4886506 100644
--- a/docs/taskruns.md
+++ b/docs/taskruns.md
@@ -599,7 +599,7 @@ and reasons.
 
 ### Configuring Task Steps and Sidecars in a TaskRun
 
-**([alpha only](https://github.com/tektoncd/pipeline/blob/main/docs/additional-configs.md#alpha-features))**
+**([beta only](https://github.com/tektoncd/pipeline/blob/main/docs/additional-configs.md#beta-features))**
 
 A TaskRun can specify `StepSpecs` or `SidecarSpecs` to configure Step or Sidecar
 specified in a Task. Only named Steps and Sidecars may be configured.
diff --git a/pkg/apis/pipeline/v1/pipelinerun_validation.go b/pkg/apis/pipeline/v1/pipelinerun_validation.go
index d45b00ab8e3..37c977197b0 100644
--- a/pkg/apis/pipeline/v1/pipelinerun_validation.go
+++ b/pkg/apis/pipeline/v1/pipelinerun_validation.go
@@ -286,11 +286,11 @@ func (ps *PipelineRunSpec) validatePipelineTimeout(timeout time.Duration, errorM
 
 func validateTaskRunSpec(ctx context.Context, trs PipelineTaskRunSpec) (errs *apis.FieldError) {
 	if trs.StepSpecs != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepSpecs", config.AlphaAPIFields).ViaField("stepSpecs"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepSpecs", config.BetaAPIFields).ViaField("stepSpecs"))
 		errs = errs.Also(validateStepSpecs(trs.StepSpecs).ViaField("stepSpecs"))
 	}
 	if trs.SidecarSpecs != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarSpecs", config.AlphaAPIFields).ViaField("sidecarSpecs"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarSpecs", config.BetaAPIFields).ViaField("sidecarSpecs"))
 		errs = errs.Also(validateSidecarSpecs(trs.SidecarSpecs).ViaField("sidecarSpecs"))
 	}
 	if trs.ComputeResources != nil {
diff --git a/pkg/apis/pipeline/v1/pipelinerun_validation_test.go b/pkg/apis/pipeline/v1/pipelinerun_validation_test.go
index 8e7f24a0e87..2962ddf6c81 100644
--- a/pkg/apis/pipeline/v1/pipelinerun_validation_test.go
+++ b/pkg/apis/pipeline/v1/pipelinerun_validation_test.go
@@ -970,7 +970,7 @@ func TestPipelineRunSpec_Invalidate(t *testing.T) {
 		wantErr:     apis.ErrMultipleOneOf("taskRunSpecs[0].stepSpecs[1].name"),
 		withContext: cfgtesting.EnableAlphaAPIFields,
 	}, {
-		name: "stepSpecs disallowed without alpha feature gate",
+		name: "stepSpecs disallowed without beta feature gate",
 		spec: v1.PipelineRunSpec{
 			PipelineRef: &v1.PipelineRef{Name: "foo"},
 			TaskRunSpecs: []v1.PipelineTaskRunSpec{
@@ -986,9 +986,9 @@ func TestPipelineRunSpec_Invalidate(t *testing.T) {
 			},
 		},
 		withContext: cfgtesting.EnableStableAPIFields,
-		wantErr:     apis.ErrGeneric("stepSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
+		wantErr:     apis.ErrGeneric("stepSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" or \"beta\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
 	}, {
-		name: "sidecarSpec disallowed without alpha feature gate",
+		name: "sidecarSpec disallowed without beta feature gate",
 		spec: v1.PipelineRunSpec{
 			PipelineRef: &v1.PipelineRef{Name: "foo"},
 			TaskRunSpecs: []v1.PipelineTaskRunSpec{
@@ -1004,7 +1004,7 @@ func TestPipelineRunSpec_Invalidate(t *testing.T) {
 			},
 		},
 		withContext: cfgtesting.EnableStableAPIFields,
-		wantErr:     apis.ErrGeneric("sidecarSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
+		wantErr:     apis.ErrGeneric("sidecarSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" or \"beta\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
 	}, {
 		name: "missing stepSpecs name",
 		spec: v1.PipelineRunSpec{
@@ -1077,7 +1077,7 @@ func TestPipelineRunSpec_Invalidate(t *testing.T) {
 			"taskRunSpecs[0].stepSpecs.resources",
 			"taskRunSpecs[0].computeResources",
 		),
-		withContext: cfgtesting.EnableAlphaAPIFields,
+		withContext: cfgtesting.EnableBetaAPIFields,
 	}, {
 		name: "computeResources disallowed without beta feature gate",
 		spec: v1.PipelineRunSpec{
@@ -1140,7 +1140,7 @@ func TestPipelineRunSpec_Validate(t *testing.T) {
 				},
 			}},
 		},
-		withContext: cfgtesting.EnableAlphaAPIFields,
+		withContext: cfgtesting.EnableBetaAPIFields,
 	}, {
 		name: "valid sidecar and task-level (taskRunSpecs.resources) resource requirements configured",
 		spec: v1.PipelineRunSpec{
@@ -1163,7 +1163,7 @@ func TestPipelineRunSpec_Validate(t *testing.T) {
 				}},
 			}},
 		},
-		withContext: cfgtesting.EnableAlphaAPIFields,
+		withContext: cfgtesting.EnableBetaAPIFields,
 	}}
 
 	for _, ps := range tests {
diff --git a/pkg/apis/pipeline/v1/taskrun_validation.go b/pkg/apis/pipeline/v1/taskrun_validation.go
index 771d684d40c..f2aafa23f74 100644
--- a/pkg/apis/pipeline/v1/taskrun_validation.go
+++ b/pkg/apis/pipeline/v1/taskrun_validation.go
@@ -80,11 +80,11 @@ func (ts *TaskRunSpec) Validate(ctx context.Context) (errs *apis.FieldError) {
 		errs = errs.Also(validateDebug(ts.Debug).ViaField("debug"))
 	}
 	if ts.StepSpecs != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepSpecs", config.AlphaAPIFields).ViaField("stepSpecs"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepSpecs", config.BetaAPIFields).ViaField("stepSpecs"))
 		errs = errs.Also(validateStepSpecs(ts.StepSpecs).ViaField("stepSpecs"))
 	}
 	if ts.SidecarSpecs != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarSpecs", config.AlphaAPIFields).ViaField("sidecarSpecs"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarSpecs", config.BetaAPIFields).ViaField("sidecarSpecs"))
 		errs = errs.Also(validateSidecarSpecs(ts.SidecarSpecs).ViaField("sidecarSpecs"))
 	}
 	if ts.ComputeResources != nil {
diff --git a/pkg/apis/pipeline/v1/taskrun_validation_test.go b/pkg/apis/pipeline/v1/taskrun_validation_test.go
index 978b3164a1c..33689e325ec 100644
--- a/pkg/apis/pipeline/v1/taskrun_validation_test.go
+++ b/pkg/apis/pipeline/v1/taskrun_validation_test.go
@@ -416,7 +416,7 @@ func TestTaskRun_Validate(t *testing.T) {
 		},
 		wc: cfgtesting.EnableAlphaAPIFields,
 	}, {
-		name: "alpha feature: valid step and sidecar specs",
+		name: "beta feature: valid step and sidecar specs",
 		taskRun: &v1.TaskRun{
 			ObjectMeta: metav1.ObjectMeta{Name: "tr"},
 			Spec: v1.TaskRunSpec{
@@ -435,7 +435,7 @@ func TestTaskRun_Validate(t *testing.T) {
 				}},
 			},
 		},
-		wc: cfgtesting.EnableAlphaAPIFields,
+		wc: cfgtesting.EnableBetaAPIFields,
 	}}
 	for _, ts := range tests {
 		t.Run(ts.name, func(t *testing.T) {
@@ -704,7 +704,7 @@ func TestTaskRunSpec_Invalidate(t *testing.T) {
 		wantErr: apis.ErrInvalidValue("turnOn is not a valid onFailure breakpoint value, onFailure breakpoint is only allowed to be set as enabled", "debug.breakpoints.onFailure"),
 		wc:      cfgtesting.EnableAlphaAPIFields,
 	}, {
-		name: "stepSpecs disallowed without alpha feature gate",
+		name: "stepSpecs disallowed without beta feature gate",
 		spec: v1.TaskRunSpec{
 			TaskRef: &v1.TaskRef{
 				Name: "foo",
@@ -717,9 +717,9 @@ func TestTaskRunSpec_Invalidate(t *testing.T) {
 			}},
 		},
 		wc:      cfgtesting.EnableStableAPIFields,
-		wantErr: apis.ErrGeneric("stepSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\""),
+		wantErr: apis.ErrGeneric("stepSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" or \"beta\" but it is \"stable\""),
 	}, {
-		name: "sidecarSpec disallowed without alpha feature gate",
+		name: "sidecarSpec disallowed without beta feature gate",
 		spec: v1.TaskRunSpec{
 			TaskRef: &v1.TaskRef{
 				Name: "foo",
@@ -732,7 +732,7 @@ func TestTaskRunSpec_Invalidate(t *testing.T) {
 			}},
 		},
 		wc:      cfgtesting.EnableStableAPIFields,
-		wantErr: apis.ErrGeneric("sidecarSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\""),
+		wantErr: apis.ErrGeneric("sidecarSpecs requires \"enable-api-fields\" feature gate to be \"alpha\" or \"beta\" but it is \"stable\""),
 	}, {
 		name: "duplicate stepSpecs names",
 		spec: v1.TaskRunSpec{
@@ -815,7 +815,7 @@ func TestTaskRunSpec_Invalidate(t *testing.T) {
 			"stepSpecs.resources",
 			"computeResources",
 		),
-		wc: cfgtesting.EnableAlphaAPIFields,
+		wc: cfgtesting.EnableBetaAPIFields,
 	}, {
 		name: "computeResources disallowed without beta feature gate",
 		spec: v1.TaskRunSpec{
diff --git a/pkg/apis/pipeline/v1beta1/pipelinerun_validation.go b/pkg/apis/pipeline/v1beta1/pipelinerun_validation.go
index 7113b653620..31fe4fb7281 100644
--- a/pkg/apis/pipeline/v1beta1/pipelinerun_validation.go
+++ b/pkg/apis/pipeline/v1beta1/pipelinerun_validation.go
@@ -335,11 +335,11 @@ func (ps *PipelineRunSpec) validatePipelineTimeout(timeout time.Duration, errorM
 
 func validateTaskRunSpec(ctx context.Context, trs PipelineTaskRunSpec) (errs *apis.FieldError) {
 	if trs.StepOverrides != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepOverrides", config.AlphaAPIFields).ViaField("stepOverrides"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepOverrides", config.BetaAPIFields).ViaField("stepOverrides"))
 		errs = errs.Also(validateStepOverrides(trs.StepOverrides).ViaField("stepOverrides"))
 	}
 	if trs.SidecarOverrides != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarOverrides", config.AlphaAPIFields).ViaField("sidecarOverrides"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarOverrides", config.BetaAPIFields).ViaField("sidecarOverrides"))
 		errs = errs.Also(validateSidecarOverrides(trs.SidecarOverrides).ViaField("sidecarOverrides"))
 	}
 	if trs.ComputeResources != nil {
diff --git a/pkg/apis/pipeline/v1beta1/pipelinerun_validation_test.go b/pkg/apis/pipeline/v1beta1/pipelinerun_validation_test.go
index 706078d181c..2d8fb19833e 100644
--- a/pkg/apis/pipeline/v1beta1/pipelinerun_validation_test.go
+++ b/pkg/apis/pipeline/v1beta1/pipelinerun_validation_test.go
@@ -949,7 +949,7 @@ func TestPipelineRun_Validate(t *testing.T) {
 			},
 		},
 	}, {
-		name: "alpha feature: sidecar and step overrides",
+		name: "beta feature: sidecar and step overrides",
 		pr: v1beta1.PipelineRun{
 			ObjectMeta: metav1.ObjectMeta{
 				Name: "pr",
@@ -979,7 +979,7 @@ func TestPipelineRun_Validate(t *testing.T) {
 				},
 			},
 		},
-		wc: cfgtesting.EnableAlphaAPIFields,
+		wc: cfgtesting.EnableBetaAPIFields,
 	}}
 
 	for _, ts := range tests {
@@ -1109,7 +1109,7 @@ func TestPipelineRunSpec_Invalidate(t *testing.T) {
 		wantErr:     apis.ErrMultipleOneOf("taskRunSpecs[0].stepOverrides[1].name"),
 		withContext: cfgtesting.EnableAlphaAPIFields,
 	}, {
-		name: "stepOverride disallowed without alpha feature gate",
+		name: "stepOverride disallowed without alpha or beta feature gate",
 		spec: v1beta1.PipelineRunSpec{
 			PipelineRef: &v1beta1.PipelineRef{Name: "foo"},
 			TaskRunSpecs: []v1beta1.PipelineTaskRunSpec{
@@ -1127,9 +1127,9 @@ func TestPipelineRunSpec_Invalidate(t *testing.T) {
 			},
 		},
 		withContext: cfgtesting.EnableStableAPIFields,
-		wantErr:     apis.ErrGeneric("stepOverrides requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
+		wantErr:     apis.ErrGeneric("stepOverrides requires \"enable-api-fields\" feature gate to be \"alpha\" or \"beta\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
 	}, {
-		name: "sidecarOverride disallowed without alpha feature gate",
+		name: "sidecarOverride disallowed without alpha or beta feature gate",
 		spec: v1beta1.PipelineRunSpec{
 			PipelineRef: &v1beta1.PipelineRef{Name: "foo"},
 			TaskRunSpecs: []v1beta1.PipelineTaskRunSpec{
@@ -1147,7 +1147,7 @@ func TestPipelineRunSpec_Invalidate(t *testing.T) {
 			},
 		},
 		withContext: cfgtesting.EnableStableAPIFields,
-		wantErr:     apis.ErrGeneric("sidecarOverrides requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
+		wantErr:     apis.ErrGeneric("sidecarOverrides requires \"enable-api-fields\" feature gate to be \"alpha\" or \"beta\" but it is \"stable\"").ViaIndex(0).ViaField("taskRunSpecs"),
 	}, {
 		name: "missing stepOverride name",
 		spec: v1beta1.PipelineRunSpec{
diff --git a/pkg/apis/pipeline/v1beta1/taskrun_validation.go b/pkg/apis/pipeline/v1beta1/taskrun_validation.go
index b44b3d42e2c..a82996439f7 100644
--- a/pkg/apis/pipeline/v1beta1/taskrun_validation.go
+++ b/pkg/apis/pipeline/v1beta1/taskrun_validation.go
@@ -80,11 +80,11 @@ func (ts *TaskRunSpec) Validate(ctx context.Context) (errs *apis.FieldError) {
 		errs = errs.Also(validateDebug(ts.Debug).ViaField("debug"))
 	}
 	if ts.StepOverrides != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepOverrides", config.AlphaAPIFields).ViaField("stepOverrides"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "stepOverrides", config.BetaAPIFields).ViaField("stepOverrides"))
 		errs = errs.Also(validateStepOverrides(ts.StepOverrides).ViaField("stepOverrides"))
 	}
 	if ts.SidecarOverrides != nil {
-		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarOverrides", config.AlphaAPIFields).ViaField("sidecarOverrides"))
+		errs = errs.Also(config.ValidateEnabledAPIFields(ctx, "sidecarOverrides", config.BetaAPIFields).ViaField("sidecarOverrides"))
 		errs = errs.Also(validateSidecarOverrides(ts.SidecarOverrides).ViaField("sidecarOverrides"))
 	}
 	if ts.ComputeResources != nil {
diff --git a/pkg/apis/pipeline/v1beta1/taskrun_validation_test.go b/pkg/apis/pipeline/v1beta1/taskrun_validation_test.go
index e63fdfd21da..9bbf77036b9 100644
--- a/pkg/apis/pipeline/v1beta1/taskrun_validation_test.go
+++ b/pkg/apis/pipeline/v1beta1/taskrun_validation_test.go
@@ -446,7 +446,7 @@ func TestTaskRun_Validate(t *testing.T) {
 			},
 		},
 	}, {
-		name: "alpha feature: valid step and sidecar overrides",
+		name: "beta feature: valid step and sidecar overrides",
 		taskRun: &v1beta1.TaskRun{
 			ObjectMeta: metav1.ObjectMeta{Name: "tr"},
 			Spec: v1beta1.TaskRunSpec{
@@ -465,7 +465,7 @@ func TestTaskRun_Validate(t *testing.T) {
 				}},
 			},
 		},
-		wc: cfgtesting.EnableAlphaAPIFields,
+		wc: cfgtesting.EnableBetaAPIFields,
 	}}
 	for _, ts := range tests {
 		t.Run(ts.name, func(t *testing.T) {
@@ -698,36 +698,6 @@ func TestTaskRunSpec_Invalidate(t *testing.T) {
 		},
 		wantErr: apis.ErrInvalidValue("turnOn is not a valid onFailure breakpoint value, onFailure breakpoint is only allowed to be set as enabled", "debug.breakpoints.onFailure"),
 		wc:      cfgtesting.EnableAlphaAPIFields,
-	}, {
-		name: "stepOverride disallowed without alpha feature gate",
-		spec: v1beta1.TaskRunSpec{
-			TaskRef: &v1beta1.TaskRef{
-				Name: "foo",
-			},
-			StepOverrides: []v1beta1.TaskRunStepOverride{{
-				Name: "foo",
-				Resources: corev1.ResourceRequirements{
-					Requests: corev1.ResourceList{corev1.ResourceMemory: corev1resources.MustParse("1Gi")},
-				},
-			}},
-		},
-		wc:      cfgtesting.EnableStableAPIFields,
-		wantErr: apis.ErrGeneric("stepOverrides requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\""),
-	}, {
-		name: "sidecarOverride disallowed without alpha feature gate",
-		spec: v1beta1.TaskRunSpec{
-			TaskRef: &v1beta1.TaskRef{
-				Name: "foo",
-			},
-			SidecarOverrides: []v1beta1.TaskRunSidecarOverride{{
-				Name: "foo",
-				Resources: corev1.ResourceRequirements{
-					Requests: corev1.ResourceList{corev1.ResourceMemory: corev1resources.MustParse("1Gi")},
-				},
-			}},
-		},
-		wc:      cfgtesting.EnableStableAPIFields,
-		wantErr: apis.ErrGeneric("sidecarOverrides requires \"enable-api-fields\" feature gate to be \"alpha\" but it is \"stable\""),
 	}, {
 		name: "duplicate stepOverride names",
 		spec: v1beta1.TaskRunSpec{
@@ -940,7 +910,7 @@ func TestTaskRunSpec_Validate(t *testing.T) {
 				},
 			}},
 		},
-		wc: cfgtesting.EnableAlphaAPIFields,
+		wc: cfgtesting.EnableBetaAPIFields,
 	}}
 
 	for _, ts := range tests {