diff --git a/packages/babel-parser/ast/spec.md b/packages/babel-parser/ast/spec.md
index e86d9098bd..0db4e64dea 100644
--- a/packages/babel-parser/ast/spec.md
+++ b/packages/babel-parser/ast/spec.md
@@ -1412,6 +1412,7 @@ An export default declaration, e.g., `export default function () {};` or `export
 interface ExportAllDeclaration <: ModuleDeclaration {
   type: "ExportAllDeclaration";
   source: StringLiteral;
+  assertions?: [ ImportAttribute ];
 }
 ```
 
diff --git a/packages/babel-types/src/definitions/core.js b/packages/babel-types/src/definitions/core.js
index 7484c3f1f1..13deeab880 100644
--- a/packages/babel-types/src/definitions/core.js
+++ b/packages/babel-types/src/definitions/core.js
@@ -1402,6 +1402,7 @@ defineType("ExportAllDeclaration", {
       validate: assertNodeType("StringLiteral"),
     },
     assertions: {
+      optional: true,
       validate: chain(
         assertValueType("array"),
         assertNodeType("ImportAttribute"),
@@ -1471,6 +1472,7 @@ defineType("ExportNamedDeclaration", {
       ),
     },
     assertions: {
+      optional: true,
       validate: chain(
         assertValueType("array"),
         assertNodeType("ImportAttribute"),
@@ -1572,6 +1574,7 @@ defineType("ImportDeclaration", {
   aliases: ["Statement", "Declaration", "ModuleDeclaration"],
   fields: {
     assertions: {
+      optional: true,
       validate: chain(
         assertValueType("array"),
         assertNodeType("ImportAttribute"),