diff --git a/packages/core-types/api-report.md b/packages/core-types/api-report.md
index bd4d145a10..09611f63e1 100644
--- a/packages/core-types/api-report.md
+++ b/packages/core-types/api-report.md
@@ -17,8 +17,6 @@ export type JsonPrimitive = number | string | boolean | null;
 // @public
 export type JsonValue = JsonObject | JsonArray | JsonPrimitive;
 
-// Warning: (ae-missing-release-tag) "Observable" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
 // @public
 export type Observable<T> = {
   [Symbol.observable](): Observable<T>;
@@ -30,8 +28,6 @@ export type Observable<T> = {
   ): Subscription;
 };
 
-// Warning: (ae-missing-release-tag) "Observer" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
 // @public
 export type Observer<T> = {
   next?(value: T): void;
@@ -39,8 +35,6 @@ export type Observer<T> = {
   complete?(): void;
 };
 
-// Warning: (ae-missing-release-tag) "Subscription" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
 // @public
 export type Subscription = {
   unsubscribe(): void;
diff --git a/packages/core-types/src/observable.ts b/packages/core-types/src/observable.ts
index 367fa087e0..f7292c293c 100644
--- a/packages/core-types/src/observable.ts
+++ b/packages/core-types/src/observable.ts
@@ -16,6 +16,8 @@
 
 /**
  * Observer interface for consuming an Observer, see TC39.
+ *
+ * @public
  */
 export type Observer<T> = {
   next?(value: T): void;
@@ -25,6 +27,8 @@ export type Observer<T> = {
 
 /**
  * Subscription returned when subscribing to an Observable, see TC39.
+ *
+ * @public
  */
 export type Subscription = {
   /**
@@ -53,6 +57,8 @@ declare global {
  *
  * This is used as a common return type for observable values and can be created
  * using many different observable implementations, such as zen-observable or RxJS 5.
+ *
+ * @public
  */
 export type Observable<T> = {
   [Symbol.observable](): Observable<T>;