diff --git a/packages/babel-types/src/definitions/core.js b/packages/babel-types/src/definitions/core.js
index bc570cc5f8..825565b588 100644
--- a/packages/babel-types/src/definitions/core.js
+++ b/packages/babel-types/src/definitions/core.js
@@ -478,7 +478,7 @@ defineType("ObjectMethod", {
     },
     key: {
       validate(node, key, val) {
-        let expectedTypes = node.computed ? ["Expression"] : ["Identifier", "StringLiteral"];
+        let expectedTypes = node.computed ? ["Expression"] : ["Identifier", "StringLiteral", "NumericLiteral"];
         assertNodeType(...expectedTypes)(node, key, val);
       }
     },
@@ -510,7 +510,7 @@ defineType("ObjectProperty", {
     },
     key: {
       validate(node, key, val) {
-        let expectedTypes = node.computed ? ["Expression"] : ["Identifier", "StringLiteral"];
+        let expectedTypes = node.computed ? ["Expression"] : ["Identifier", "StringLiteral", "NumericLiteral"];
         assertNodeType(...expectedTypes)(node, key, val);
       }
     },
diff --git a/packages/babel-types/src/definitions/es2015.js b/packages/babel-types/src/definitions/es2015.js
index 1ad09e8fa9..e699ba3d18 100644
--- a/packages/babel-types/src/definitions/es2015.js
+++ b/packages/babel-types/src/definitions/es2015.js
@@ -254,7 +254,7 @@ defineType("ClassMethod", {
     },
     key: {
       validate(node, key, val) {
-        let expectedTypes = node.computed ? ["Expression"] : ["Identifier", "StringLiteral"];
+        let expectedTypes = node.computed ? ["Expression"] : ["Identifier", "StringLiteral", "NumericLiteral"];
         assertNodeType(...expectedTypes)(node, key, val);
       }
     },