diff --git a/cli/diagnostics.rs b/cli/diagnostics.rs
index 290007cc72..b92388322f 100644
--- a/cli/diagnostics.rs
+++ b/cli/diagnostics.rs
@@ -47,15 +47,11 @@ const UNSTABLE_DENO_PROPS: &[&str] = &[
   "connect",
   "consoleSize",
   "createHttpClient",
-  "fdatasync",
-  "fdatasyncSync",
   "formatDiagnostics",
   "futime",
   "futimeSync",
   "fstat",
   "fstatSync",
-  "fsync",
-  "fsyncSync",
   "ftruncate",
   "ftruncateSync",
   "hostname",
diff --git a/cli/dts/lib.deno.ns.d.ts b/cli/dts/lib.deno.ns.d.ts
index 276f13e375..896b5c8004 100644
--- a/cli/dts/lib.deno.ns.d.ts
+++ b/cli/dts/lib.deno.ns.d.ts
@@ -676,6 +676,52 @@ declare namespace Deno {
     whence: SeekMode,
   ): Promise<number>;
 
+  /**
+   * Synchronously flushes any pending data and metadata operations of the given file stream to disk.
+   *  ```ts
+   * const file = Deno.openSync("my_file.txt", { read: true, write: true, create: true });
+   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
+   * Deno.ftruncateSync(file.rid, 1);
+   * Deno.fsyncSync(file.rid);
+   * console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // H
+   * ```
+   */
+  export function fsyncSync(rid: number): void;
+
+  /**
+   * Flushes any pending data and metadata operations of the given file stream to disk.
+   *  ```ts
+   * const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
+   * await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
+   * await Deno.ftruncate(file.rid, 1);
+   * await Deno.fsync(file.rid);
+   * console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // H
+   * ```
+   */
+  export function fsync(rid: number): Promise<void>;
+
+  /*
+   * Synchronously flushes any pending data operations of the given file stream to disk.
+   *  ```ts
+   * const file = Deno.openSync("my_file.txt", { read: true, write: true, create: true });
+   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
+   * Deno.fdatasyncSync(file.rid);
+   * console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // Hello World
+   * ```
+   */
+  export function fdatasyncSync(rid: number): void;
+
+  /**
+   * Flushes any pending data operations of the given file stream to disk.
+   *  ```ts
+   * const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
+   * await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
+   * await Deno.fdatasync(file.rid);
+   * console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // Hello World
+   * ```
+   */
+  export function fdatasync(rid: number): Promise<void>;
+
   /** Close the given resource ID (rid) which has been previously opened, such
    * as via opening or creating a file.  Closing a file when you are finished
    * with it is important to avoid leaking resources.
diff --git a/cli/dts/lib.deno.unstable.d.ts b/cli/dts/lib.deno.unstable.d.ts
index 4269d4b74d..1c1869827d 100644
--- a/cli/dts/lib.deno.unstable.d.ts
+++ b/cli/dts/lib.deno.unstable.d.ts
@@ -1170,52 +1170,6 @@ declare namespace Deno {
    */
   export function ftruncate(rid: number, len?: number): Promise<void>;
 
-  /* **UNSTABLE**: New API, yet to be vetted.
-   * Synchronously flushes any pending data operations of the given file stream to disk.
-   *  ```ts
-   * const file = Deno.openSync("my_file.txt", { read: true, write: true, create: true });
-   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
-   * Deno.fdatasyncSync(file.rid);
-   * console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // Hello World
-   * ```
-   */
-  export function fdatasyncSync(rid: number): void;
-
-  /** **UNSTABLE**: New API, yet to be vetted.
-   * Flushes any pending data operations of the given file stream to disk.
-   *  ```ts
-   * const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
-   * await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
-   * await Deno.fdatasync(file.rid);
-   * console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // Hello World
-   * ```
-   */
-  export function fdatasync(rid: number): Promise<void>;
-
-  /** **UNSTABLE**: New API, yet to be vetted.
-   * Synchronously flushes any pending data and metadata operations of the given file stream to disk.
-   *  ```ts
-   * const file = Deno.openSync("my_file.txt", { read: true, write: true, create: true });
-   * Deno.writeSync(file.rid, new TextEncoder().encode("Hello World"));
-   * Deno.ftruncateSync(file.rid, 1);
-   * Deno.fsyncSync(file.rid);
-   * console.log(new TextDecoder().decode(Deno.readFileSync("my_file.txt"))); // H
-   * ```
-   */
-  export function fsyncSync(rid: number): void;
-
-  /** **UNSTABLE**: New API, yet to be vetted.
-   * Flushes any pending data and metadata operations of the given file stream to disk.
-   *  ```ts
-   * const file = await Deno.open("my_file.txt", { read: true, write: true, create: true });
-   * await Deno.write(file.rid, new TextEncoder().encode("Hello World"));
-   * await Deno.ftruncate(file.rid, 1);
-   * await Deno.fsync(file.rid);
-   * console.log(new TextDecoder().decode(await Deno.readFile("my_file.txt"))); // H
-   * ```
-   */
-  export function fsync(rid: number): Promise<void>;
-
   /** **UNSTABLE**: New API, yet to be vetted.
    * Synchronously returns a `Deno.FileInfo` for the given file stream.
    *
diff --git a/cli/ops/fs.rs b/cli/ops/fs.rs
index 8542b5230f..204d447be4 100644
--- a/cli/ops/fs.rs
+++ b/cli/ops/fs.rs
@@ -282,7 +282,6 @@ fn op_fdatasync_sync(
   args: Value,
   _zero_copy: &mut [ZeroCopyBuf],
 ) -> Result<Value, AnyError> {
-  super::check_unstable(state, "Deno.fdatasync");
   let args: FdatasyncArgs = serde_json::from_value(args)?;
   let rid = args.rid as u32;
   std_file_resource(state, rid, |r| match r {
@@ -297,8 +296,6 @@ async fn op_fdatasync_async(
   args: Value,
   _zero_copy: BufVec,
 ) -> Result<Value, AnyError> {
-  super::check_unstable2(&state, "Deno.fdatasync");
-
   let args: FdatasyncArgs = serde_json::from_value(args)?;
   let rid = args.rid as u32;
   std_file_resource(&mut state.borrow_mut(), rid, |r| match r {
@@ -319,7 +316,6 @@ fn op_fsync_sync(
   args: Value,
   _zero_copy: &mut [ZeroCopyBuf],
 ) -> Result<Value, AnyError> {
-  super::check_unstable(state, "Deno.fsync");
   let args: FsyncArgs = serde_json::from_value(args)?;
   let rid = args.rid as u32;
   std_file_resource(state, rid, |r| match r {
@@ -334,8 +330,6 @@ async fn op_fsync_async(
   args: Value,
   _zero_copy: BufVec,
 ) -> Result<Value, AnyError> {
-  super::check_unstable2(&state, "Deno.fsync");
-
   let args: FsyncArgs = serde_json::from_value(args)?;
   let rid = args.rid as u32;
   std_file_resource(&mut state.borrow_mut(), rid, |r| match r {