diff --git a/packages/babel-template/test/index.js b/packages/babel-template/test/index.js
index 4528c2c2b8de..7b893d7e4652 100644
--- a/packages/babel-template/test/index.js
+++ b/packages/babel-template/test/index.js
@@ -248,6 +248,17 @@ describe("@babel/template", function () {
       expect(result.assertions[0].type).toBe("ImportAttribute");
     });
 
+    it("should return assertions in ExportAllDeclaration when using .ast", () => {
+      const result = template.ast(
+        `export * from "foo.json" assert { type: "json" };`,
+        {
+          plugins: ["importAssertions"],
+        },
+      );
+
+      expect(result.assertions[0].type).toBe("ImportAttribute");
+    });
+
     it("should replace JSX placeholder", () => {
       const result = template.expression(
         `
diff --git a/packages/babel-types/src/definitions/core.js b/packages/babel-types/src/definitions/core.js
index 94f4074ad510..7484c3f1f133 100644
--- a/packages/babel-types/src/definitions/core.js
+++ b/packages/babel-types/src/definitions/core.js
@@ -1401,6 +1401,12 @@ defineType("ExportAllDeclaration", {
     source: {
       validate: assertNodeType("StringLiteral"),
     },
+    assertions: {
+      validate: chain(
+        assertValueType("array"),
+        assertNodeType("ImportAttribute"),
+      ),
+    },
   },
 });