diff --git a/go.mod b/go.mod
index 6b9fc15d70..bb761b4493 100644
--- a/go.mod
+++ b/go.mod
@@ -12,7 +12,7 @@ require (
 	github.com/hashicorp/hcl/v2 v2.24.0
 	github.com/hashicorp/terraform-json v0.27.1
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.38.1
-	github.com/hashicorp/terraform-provider-google-beta v1.20.1-0.20260113210833-01ec9b8e4c7f
+	github.com/hashicorp/terraform-provider-google-beta v1.20.1-0.20260113223935-c4aca73d2931
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/pkg/errors v0.9.1
 	github.com/stretchr/testify v1.11.1
diff --git a/go.sum b/go.sum
index 4e2ea221ad..9d20edd159 100644
--- a/go.sum
+++ b/go.sum
@@ -181,8 +181,8 @@ github.com/hashicorp/terraform-plugin-sdk/v2 v2.38.1 h1:mlAq/OrMlg04IuJT7NpefI1w
 github.com/hashicorp/terraform-plugin-sdk/v2 v2.38.1/go.mod h1:GQhpKVvvuwzD79e8/NZ+xzj+ZpWovdPAe8nfV/skwNU=
 github.com/hashicorp/terraform-plugin-testing v1.5.1 h1:T4aQh9JAhmWo4+t1A7x+rnxAJHCDIYW9kXyo4sVO92c=
 github.com/hashicorp/terraform-plugin-testing v1.5.1/go.mod h1:dg8clO6K59rZ8w9EshBmDp1CxTIPu3yA4iaDpX1h5u0=
-github.com/hashicorp/terraform-provider-google-beta v1.20.1-0.20260113210833-01ec9b8e4c7f h1:6G8a8cTQrIPh8z0/elK3AW3hnVGtMijQK21eRJJXC2U=
-github.com/hashicorp/terraform-provider-google-beta v1.20.1-0.20260113210833-01ec9b8e4c7f/go.mod h1:8eg1tVfOJEzN2+inar3phK3XurwWzQq1O/6LsGlTZ7w=
+github.com/hashicorp/terraform-provider-google-beta v1.20.1-0.20260113223935-c4aca73d2931 h1:wuiNgsI/OlPr7k8S8ZMH0ZQCGb5ageTdo4N58BmJ388=
+github.com/hashicorp/terraform-provider-google-beta v1.20.1-0.20260113223935-c4aca73d2931/go.mod h1:8eg1tVfOJEzN2+inar3phK3XurwWzQq1O/6LsGlTZ7w=
 github.com/hashicorp/terraform-registry-address v0.4.0 h1:S1yCGomj30Sao4l5BMPjTGZmCNzuv7/GDTDX99E9gTk=
 github.com/hashicorp/terraform-registry-address v0.4.0/go.mod h1:LRS1Ay0+mAiRkUyltGT+UHWkIqTFvigGn/LbMshfflE=
 github.com/hashicorp/terraform-svchost v0.1.1 h1:EZZimZ1GxdqFRinZ1tpJwVxxt49xc/S52uzrw4x0jKQ=
diff --git a/tfplan2cai/converters/google/resources/services/vertexai/vertexai_reasoning_engine.go b/tfplan2cai/converters/google/resources/services/vertexai/vertexai_reasoning_engine.go
index 848e112af5..4bc90bd633 100644
--- a/tfplan2cai/converters/google/resources/services/vertexai/vertexai_reasoning_engine.go
+++ b/tfplan2cai/converters/google/resources/services/vertexai/vertexai_reasoning_engine.go
@@ -271,6 +271,13 @@ func expandVertexAIReasoningEngineSpecDeploymentSpec(v interface{}, d tpgresourc
 		transformed["secretEnv"] = transformedSecretEnv
 	}
 
+	transformedPscInterfaceConfig, err := expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfig(original["psc_interface_config"], d, config)
+	if err != nil {
+		return nil, err
+	} else if val := reflect.ValueOf(transformedPscInterfaceConfig); val.IsValid() && !tpgresource.IsEmptyValue(val) {
+		transformed["pscInterfaceConfig"] = transformedPscInterfaceConfig
+	}
+
 	transformedResourceLimits, err := expandVertexAIReasoningEngineSpecDeploymentSpecResourceLimits(original["resource_limits"], d, config)
 	if err != nil {
 		return nil, err
@@ -417,6 +424,90 @@ func expandVertexAIReasoningEngineSpecDeploymentSpecSecretEnvSecretRefVersion(v
 	return v, nil
 }
 
+func expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfig(v interface{}, d tpgresource.TerraformResourceData, config *transport_tpg.Config) (interface{}, error) {
+	if v == nil {
+		return nil, nil
+	}
+	l := v.([]interface{})
+	if len(l) == 0 || l[0] == nil {
+		return nil, nil
+	}
+	raw := l[0]
+	original := raw.(map[string]interface{})
+	transformed := make(map[string]interface{})
+
+	transformedNetworkAttachment, err := expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigNetworkAttachment(original["network_attachment"], d, config)
+	if err != nil {
+		return nil, err
+	} else if val := reflect.ValueOf(transformedNetworkAttachment); val.IsValid() && !tpgresource.IsEmptyValue(val) {
+		transformed["networkAttachment"] = transformedNetworkAttachment
+	}
+
+	transformedDnsPeeringConfigs, err := expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigs(original["dns_peering_configs"], d, config)
+	if err != nil {
+		return nil, err
+	} else if val := reflect.ValueOf(transformedDnsPeeringConfigs); val.IsValid() && !tpgresource.IsEmptyValue(val) {
+		transformed["dnsPeeringConfigs"] = transformedDnsPeeringConfigs
+	}
+
+	return transformed, nil
+}
+
+func expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigNetworkAttachment(v interface{}, d tpgresource.TerraformResourceData, config *transport_tpg.Config) (interface{}, error) {
+	return v, nil
+}
+
+func expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigs(v interface{}, d tpgresource.TerraformResourceData, config *transport_tpg.Config) (interface{}, error) {
+	if v == nil {
+		return nil, nil
+	}
+	l := v.([]interface{})
+	req := make([]interface{}, 0, len(l))
+	for _, raw := range l {
+		if raw == nil {
+			continue
+		}
+		original := raw.(map[string]interface{})
+		transformed := make(map[string]interface{})
+
+		transformedDomain, err := expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigsDomain(original["domain"], d, config)
+		if err != nil {
+			return nil, err
+		} else if val := reflect.ValueOf(transformedDomain); val.IsValid() && !tpgresource.IsEmptyValue(val) {
+			transformed["domain"] = transformedDomain
+		}
+
+		transformedTargetProject, err := expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigsTargetProject(original["target_project"], d, config)
+		if err != nil {
+			return nil, err
+		} else if val := reflect.ValueOf(transformedTargetProject); val.IsValid() && !tpgresource.IsEmptyValue(val) {
+			transformed["targetProject"] = transformedTargetProject
+		}
+
+		transformedTargetNetwork, err := expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigsTargetNetwork(original["target_network"], d, config)
+		if err != nil {
+			return nil, err
+		} else if val := reflect.ValueOf(transformedTargetNetwork); val.IsValid() && !tpgresource.IsEmptyValue(val) {
+			transformed["targetNetwork"] = transformedTargetNetwork
+		}
+
+		req = append(req, transformed)
+	}
+	return req, nil
+}
+
+func expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigsDomain(v interface{}, d tpgresource.TerraformResourceData, config *transport_tpg.Config) (interface{}, error) {
+	return v, nil
+}
+
+func expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigsTargetProject(v interface{}, d tpgresource.TerraformResourceData, config *transport_tpg.Config) (interface{}, error) {
+	return v, nil
+}
+
+func expandVertexAIReasoningEngineSpecDeploymentSpecPscInterfaceConfigDnsPeeringConfigsTargetNetwork(v interface{}, d tpgresource.TerraformResourceData, config *transport_tpg.Config) (interface{}, error) {
+	return v, nil
+}
+
 func expandVertexAIReasoningEngineSpecDeploymentSpecResourceLimits(v interface{}, d tpgresource.TerraformResourceData, config *transport_tpg.Config) (map[string]string, error) {
 	if v == nil {
 		return map[string]string{}, nil