diff --git a/.changeset/soft-rivers-hydrate.md b/.changeset/soft-rivers-hydrate.md
new file mode 100644
index 00000000000..d32d7564397
--- /dev/null
+++ b/.changeset/soft-rivers-hydrate.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/query-core': patch
+---
+
+Type hydration input as a partial dehydrated state so omitted mutation and query collections are supported.
diff --git a/packages/query-core/src/__tests__/hydration.test.tsx b/packages/query-core/src/__tests__/hydration.test.tsx
index 6b874c42c49..8a8d1db3628 100644
--- a/packages/query-core/src/__tests__/hydration.test.tsx
+++ b/packages/query-core/src/__tests__/hydration.test.tsx
@@ -676,22 +676,13 @@ describe('dehydration and rehydration', () => {
     consoleMock.mockRestore()
   })
 
-  it('should not hydrate if the hydratedState is null or is not an object', () => {
-    const queryCache = new QueryCache()
-    const queryClient = new QueryClient({ queryCache })
-
-    expect(() => hydrate(queryClient, null)).not.toThrow()
-    expect(() => hydrate(queryClient, 'invalid')).not.toThrow()
-
-    queryClient.clear()
-  })
-
   it('should support hydratedState with undefined queries and mutations', () => {
     const queryCache = new QueryCache()
     const queryClient = new QueryClient({ queryCache })
 
+    expect(() => hydrate(queryClient, { mutations: [] })).not.toThrow()
     expect(() => hydrate(queryClient, {})).not.toThrow()
-    expect(() => hydrate(queryClient, {})).not.toThrow()
+    expect(() => hydrate(queryClient, { queries: [] })).not.toThrow()
 
     queryClient.clear()
   })
diff --git a/packages/query-core/src/hydration.ts b/packages/query-core/src/hydration.ts
index 03106ebab31..9a4ca3f8b01 100644
--- a/packages/query-core/src/hydration.ts
+++ b/packages/query-core/src/hydration.ts
@@ -193,25 +193,16 @@ export function dehydrate(
 
 export function hydrate(
   client: QueryClient,
-  dehydratedState: unknown,
+  dehydratedState: Partial<DehydratedState>,
   options?: HydrateOptions,
 ): void {
-  if (typeof dehydratedState !== 'object' || dehydratedState === null) {
-    return
-  }
-
   const mutationCache = client.getMutationCache()
   const queryCache = client.getQueryCache()
   const deserializeData =
     options?.defaultOptions?.deserializeData ??
     client.getDefaultOptions().hydrate?.deserializeData
 
-  // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
-  const mutations = (dehydratedState as DehydratedState).mutations || []
-  // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
-  const queries = (dehydratedState as DehydratedState).queries || []
-
-  mutations.forEach(({ state, ...mutationOptions }) => {
+  dehydratedState.mutations?.forEach(({ state, ...mutationOptions }) => {
     mutationCache.build(
       client,
       {
@@ -223,7 +214,7 @@ export function hydrate(
     )
   })
 
-  queries.forEach(
+  dehydratedState.queries?.forEach(
     ({
       queryKey,
       state,