diff --git a/integration/update_builder_test.go b/integration/update_builder_test.go
index 7afaeae..dc915eb 100644
--- a/integration/update_builder_test.go
+++ b/integration/update_builder_test.go
@@ -79,7 +79,7 @@ func testUpdateBuilder(t *testing.T, context spec.G, it spec.S) {
 		nodeConfigPath := fmt.Sprintf("/v2/paketobuildpacks/nodejs/blobs/%s", mustConfigName(t, nodeImg))
 		nodeManifestReqCount := 0
 		extensionManifestPath := "/v2/paketocommunity/ubi-nodejs-extension/manifests/0.0.3"
-	        extensionConfigPath := fmt.Sprintf("/v2/paketocommunity/ubi-nodejs-extension/blobs/%s", mustConfigName(t, extensionImg))
+		extensionConfigPath := fmt.Sprintf("/v2/paketocommunity/ubi-nodejs-extension/blobs/%s", mustConfigName(t, extensionImg))
 		extensionManifestReqCount := 0
 		server = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
 
@@ -258,6 +258,10 @@ description = "Some description"
   build-image = "REGISTRY-URI/somerepository/build:0.0.10-some-cnb"
   run-image = "REGISTRY-URI/somerepository/run:some-cnb"
   run-image-mirrors = ["REGISTRY-URI/some-repository/run:some-cnb"]
+
+[[targets]]
+	os = "linux"
+	arch = "amd64"
 			`), []byte(`REGISTRY-URI`), []byte(strings.TrimPrefix(server.URL, "http://"))), 0600)
 		Expect(err).NotTo(HaveOccurred())
 	})
@@ -324,6 +328,10 @@ description = "Some description"
   id = "io.paketo.stacks.some-stack"
   run-image = "REGISTRY-URI/somerepository/run:some-cnb"
   run-image-mirrors = ["REGISTRY-URI/some-repository/run:some-cnb"]
+
+[[targets]]
+	os = "linux"
+	arch = "amd64"
 			`, "REGISTRY-URI", strings.TrimPrefix(server.URL, "http://"))))
 	})
 
diff --git a/internal/builder_config.go b/internal/builder_config.go
index d3087be..ee03093 100644
--- a/internal/builder_config.go
+++ b/internal/builder_config.go
@@ -17,6 +17,7 @@ type BuilderConfig struct {
 	Extensions     []BuilderConfigExtension      `toml:"extensions"`
 	OrderExtension []BuilderExtensionConfigOrder `toml:"order-extensions"`
 	Stack          BuilderConfigStack            `toml:"stack"`
+	Targets        []BuilderConfigTarget         `toml:"targets"`
 }
 
 type BuilderConfigBuildpack struct {
@@ -61,6 +62,11 @@ type BuilderConfigStack struct {
 	RunImageMirrors []string `toml:"run-image-mirrors"`
 }
 
+type BuilderConfigTarget struct {
+	OS   string `toml:"os"`
+	Arch string `toml:"arch"`
+}
+
 // Note: this is to support that buildpackages can refer to this field as `image` or `uri`.
 func (b *BuilderConfigBuildpack) UnmarshalTOML(v interface{}) error {
 	if m, ok := v.(map[string]interface{}); ok {
diff --git a/internal/builder_config_test.go b/internal/builder_config_test.go
index 2c6b709..119e627 100644
--- a/internal/builder_config_test.go
+++ b/internal/builder_config_test.go
@@ -66,6 +66,14 @@ description = "Some description"
   build-image = "some-registry/somerepository/build:1.2.3-some-cnb"
   run-image = "some-registry/somerepository/run:some-cnb"
   run-image-mirrors = ["some-registry/some-repository/run:some-cnb"]
+
+[[targets]]
+	os = "linux"
+	arch = "amd64"
+
+[[targets]]
+	os = "linux"
+	arch = "arm64"
 			`)
 			Expect(err).NotTo(HaveOccurred())
 
@@ -135,6 +143,16 @@ description = "Some description"
 					RunImage:        "some-registry/somerepository/run:some-cnb",
 					RunImageMirrors: []string{"some-registry/some-repository/run:some-cnb"},
 				},
+				Targets: []internal.BuilderConfigTarget{
+					{
+						OS:   "linux",
+						Arch: "amd64",
+					},
+					{
+						OS:   "linux",
+						Arch: "arm64",
+					},
+				},
 			}))
 		})
 
@@ -262,6 +280,16 @@ description = "Some description"
 					RunImage:        "some-registry/somerepository/run:some-cnb",
 					RunImageMirrors: []string{"some-registry/some-repository/run:some-cnb"},
 				},
+				Targets: []internal.BuilderConfigTarget{
+					{
+						OS:   "linux",
+						Arch: "amd64",
+					},
+					{
+						OS:   "linux",
+						Arch: "arm64",
+					},
+				},
 			})
 			Expect(err).NotTo(HaveOccurred())
 
@@ -309,6 +337,14 @@ description = "Some description"
   build-image = "some-registry/somerepository/build:1.2.3-some-cnb"
   run-image = "some-registry/somerepository/run:some-cnb"
   run-image-mirrors = ["some-registry/some-repository/run:some-cnb"]
+
+[[targets]]
+	os = "linux"
+	arch = "amd64"
+
+[[targets]]
+	os = "linux"
+	arch = "arm64"
 				`))
 		})
 
@@ -352,6 +388,16 @@ description = "Some description"
 					RunImage:        "some-registry/somerepository/run:some-cnb",
 					RunImageMirrors: []string{"some-registry/some-repository/run:some-cnb"},
 				},
+				Targets: []internal.BuilderConfigTarget{
+					{
+						OS:   "linux",
+						Arch: "amd64",
+					},
+					{
+						OS:   "linux",
+						Arch: "arm64",
+					},
+				},
 			})
 			Expect(err).NotTo(HaveOccurred())
 
@@ -388,9 +434,17 @@ description = "Some description"
   build-image = "some-registry/somerepository/build:1.2.3-some-cnb"
   run-image = "some-registry/somerepository/run:some-cnb"
   run-image-mirrors = ["some-registry/some-repository/run:some-cnb"]
-				`))
 
+[[targets]]
+	os = "linux"
+	arch = "amd64"
+
+[[targets]]
+	os = "linux"
+	arch = "arm64"
+				`))
 		})
+
 		context("failure cases", func() {
 			context("when the file cannot be opened", func() {
 				it.Before(func() {