diff --git a/src/features/feeds/feed.ts b/src/features/feeds/feed.ts
index 0f04efa..68cb0d0 100644
--- a/src/features/feeds/feed.ts
+++ b/src/features/feeds/feed.ts
@@ -4,6 +4,7 @@ import type { AwsElasticContainerRegistryFeed } from "./awsElasticContainerRegis
 import type { BuiltInFeed } from "./builtInFeed";
 import type { DockerFeed } from "./dockerFeed";
 import { FeedType } from "./feedType";
+import type { GcsStorageFeed } from "./gcsStorageFeed";
 import type { GitHubFeed } from "./gitHubFeed";
 import type { HelmFeed } from "./helmFeed";
 import type { MavenFeed } from "./mavenFeed";
@@ -12,7 +13,7 @@ import type { NugetFeed } from "./nugetFeed";
 import type { OctopusProjectFeed } from "./octopusProjectFeed";
 import { every } from "lodash";
 
-export type ExternalFeed = NugetFeed | DockerFeed | MavenFeed | GitHubFeed | HelmFeed | AwsElasticContainerRegistryFeed | NpmFeed;
+export type ExternalFeed = NugetFeed | DockerFeed | MavenFeed | GitHubFeed | HelmFeed | AwsElasticContainerRegistryFeed | GcsStorageFeed | NpmFeed;
 
 export type Feed = ExternalFeed | BuiltInFeed | OctopusProjectFeed;
 
diff --git a/src/features/feeds/feedType.ts b/src/features/feeds/feedType.ts
index 08303c9..dfb0562 100644
--- a/src/features/feeds/feedType.ts
+++ b/src/features/feeds/feedType.ts
@@ -2,6 +2,7 @@ export enum FeedType {
     AwsElasticContainerRegistry = "AwsElasticContainerRegistry",
     BuiltIn = "BuiltIn",
     Docker = "Docker",
+    GcsStorage = "GcsStorage",
     GitHub = "GitHub",
     Helm = "Helm",
     Maven = "Maven",
diff --git a/src/features/feeds/gcsStorageFeed.test.ts b/src/features/feeds/gcsStorageFeed.test.ts
new file mode 100644
index 0000000..e9c958e
--- /dev/null
+++ b/src/features/feeds/gcsStorageFeed.test.ts
@@ -0,0 +1,48 @@
+import type { GcsStorageFeed } from "./gcsStorageFeed";
+import { FeedType } from "./feedType";
+
+describe("gcsStorageFeed", () => {
+    test("can create with service account key", () => {
+        const feed: GcsStorageFeed = {
+            Id: "feeds-123",
+            Name: "Test GCS Feed",
+            FeedType: FeedType.GcsStorage,
+            SpaceId: "Spaces-1",
+            UseServiceAccountKey: true,
+            ServiceAccountJsonKey: {
+                HasValue: true,
+                NewValue: '{"type":"service_account"}',
+            },
+            Project: "my-project",
+            DownloadAttempts: 5,
+            DownloadRetryBackoffSeconds: 10,
+        };
+
+        expect(feed.Name).toBe("Test GCS Feed");
+        expect(feed.UseServiceAccountKey).toBe(true);
+        expect(feed.DownloadAttempts).toBe(5);
+        expect(feed.DownloadRetryBackoffSeconds).toBe(10);
+    });
+
+    test("can create with OIDC authentication", () => {
+        const feed: GcsStorageFeed = {
+            Id: "feeds-456",
+            Name: "Test GCS Feed OIDC",
+            FeedType: FeedType.GcsStorage,
+            SpaceId: "Spaces-1",
+            UseServiceAccountKey: false,
+            OidcAuthentication: {
+                Audience: "api://AzureADTokenExchange",
+                SubjectKeys: ["space", "feed"],
+            },
+            DownloadAttempts: 3,
+            DownloadRetryBackoffSeconds: 5,
+        };
+
+        expect(feed.Name).toBe("Test GCS Feed OIDC");
+        expect(feed.UseServiceAccountKey).toBe(false);
+        expect(feed.OidcAuthentication?.Audience).toBe("api://AzureADTokenExchange");
+        expect(feed.DownloadAttempts).toBe(3);
+        expect(feed.DownloadRetryBackoffSeconds).toBe(5);
+    });
+});
diff --git a/src/features/feeds/gcsStorageFeed.ts b/src/features/feeds/gcsStorageFeed.ts
new file mode 100644
index 0000000..5ff1a0d
--- /dev/null
+++ b/src/features/feeds/gcsStorageFeed.ts
@@ -0,0 +1,19 @@
+import type { FeedType } from "./feedType";
+import type { SensitiveValue } from "../variables";
+import { SpaceScopedResource } from "../../spaceScopedResource";
+import { NamedResource } from "../../namedResource";
+import type { RetryFeed } from "./retryFeed";
+
+export interface GoogleOidcAuthentication {
+    Audience?: string;
+    SubjectKeys: string[];
+}
+
+export interface GcsStorageFeed extends SpaceScopedResource, NamedResource, RetryFeed {
+    FeedType: FeedType.GcsStorage;
+    Name: string;
+    UseServiceAccountKey: boolean;
+    ServiceAccountJsonKey?: SensitiveValue;
+    Project?: string;
+    OidcAuthentication?: GoogleOidcAuthentication;
+}
diff --git a/src/features/feeds/index.ts b/src/features/feeds/index.ts
index b1b033f..75128bf 100644
--- a/src/features/feeds/index.ts
+++ b/src/features/feeds/index.ts
@@ -4,6 +4,7 @@ export * from "./dockerFeed";
 export * from "./feed";
 export * from "./feedRepository";
 export * from "./feedType";
+export * from "./gcsStorageFeed";
 export * from "./gitHubFeed";
 export * from "./helmFeed";
 export * from "./mavenFeed";