diff --git a/.changeset/fluffy-signs-peel.md b/.changeset/fluffy-signs-peel.md
new file mode 100644
index 0000000000..a004151263
--- /dev/null
+++ b/.changeset/fluffy-signs-peel.md
@@ -0,0 +1,5 @@
+---
+'@shopify/cli-kit': minor
+---
+
+Remove hardcoded theme duplicate mutation API version
diff --git a/packages/cli-kit/src/public/node/themes/api.test.ts b/packages/cli-kit/src/public/node/themes/api.test.ts
index d3dc4e0673..819f159933 100644
--- a/packages/cli-kit/src/public/node/themes/api.test.ts
+++ b/packages/cli-kit/src/public/node/themes/api.test.ts
@@ -470,7 +470,6 @@ describe('themeDuplicate', () => {
         session,
         variables: {id: `gid://shopify/OnlineStoreTheme/${id}`, name},
         preferredBehaviour: expectedApiOptions,
-        version: '2025-10',
         responseOptions: {
           onResponse: expect.any(Function),
         },
diff --git a/packages/cli-kit/src/public/node/themes/api.ts b/packages/cli-kit/src/public/node/themes/api.ts
index 2af4ad3295..4084c4fceb 100644
--- a/packages/cli-kit/src/public/node/themes/api.ts
+++ b/packages/cli-kit/src/public/node/themes/api.ts
@@ -486,7 +486,6 @@ export async function themeDuplicate(
     session,
     variables: {id: composeThemeGid(id), name},
     preferredBehaviour: THEME_API_NETWORK_BEHAVIOUR,
-    version: '2025-10',
     responseOptions: {
       onResponse: (response) => {
         requestId = response.headers.get('x-request-id') ?? undefined