diff --git a/packages/async-flow/src/async-flow.js b/packages/async-flow/src/async-flow.js
index cf20b8365785..fda11571b770 100644
--- a/packages/async-flow/src/async-flow.js
+++ b/packages/async-flow/src/async-flow.js
@@ -2,8 +2,12 @@ import { annotateError, Fail, makeError, q, X } from '@endo/errors';
 import { E } from '@endo/eventual-send';
 import { M } from '@endo/patterns';
 import { makeScalarWeakMapStore } from '@agoric/store';
-import { PromiseWatcherI } from '@agoric/base-zone';
-import { prepareVowTools, toPassableCap, VowShape } from '@agoric/vow';
+import {
+  prepareVowTools,
+  toPassableCap,
+  ReactionGuard,
+  VowShape,
+} from '@agoric/vow';
 import { makeReplayMembrane } from './replay-membrane.js';
 import { prepareLogStore } from './log-store.js';
 import { prepareBijection } from './bijection.js';
@@ -36,7 +40,10 @@ const AsyncFlowIKit = harden({
     complete: M.call().returns(),
     panic: M.call(M.error()).returns(M.not(M.any())), // only throws
   }),
-  wakeWatcher: PromiseWatcherI,
+  wakeWatcher: M.interface('WakeWatcher', {
+    onFulfilled: ReactionGuard,
+    onRejected: ReactionGuard,
+  }),
 });
 
 const AdminAsyncFlowI = M.interface('AsyncFlowAdmin', {
diff --git a/packages/base-zone/src/watch-promise.js b/packages/base-zone/src/watch-promise.js
index 4693bd98377b..48ef69c49e60 100644
--- a/packages/base-zone/src/watch-promise.js
+++ b/packages/base-zone/src/watch-promise.js
@@ -7,7 +7,7 @@ const { Fail } = assert;
 const { apply } = Reflect;
 
 /**
- * A PromiseWatcher method guard callable with or more arguments, returning void.
+ * A PromiseWatcher method guard callable with one or more arguments, returning void.
  */
 export const PromiseWatcherHandler = M.call(M.any()).rest(M.any()).returns();
 
diff --git a/packages/network/package.json b/packages/network/package.json
index 6fdc9586e551..d226c3d9e36d 100644
--- a/packages/network/package.json
+++ b/packages/network/package.json
@@ -23,8 +23,7 @@
   "dependencies": {
     "@agoric/assert": "^0.6.0",
     "@agoric/internal": "^0.3.2",
-    "@agoric/store": "^0.9.2",
-    "@agoric/vat-data": "^0.5.2",
+    "@agoric/vow": "^0.1.0",
     "@endo/base64": "^1.0.5",
     "@endo/far": "^1.1.2",
     "@endo/pass-style": "^1.4.0",
@@ -32,9 +31,9 @@
     "@endo/promise-kit": "^1.1.2"
   },
   "devDependencies": {
+    "@agoric/store": "^0.9.2",
     "@agoric/swingset-liveslots": "^0.10.2",
     "@agoric/swingset-vat": "^0.32.2",
-    "@agoric/vow": "^0.1.0",
     "@agoric/zone": "^0.2.2",
     "@endo/bundle-source": "^3.2.3",
     "ava": "^5.3.0",
diff --git a/packages/network/src/shapes.js b/packages/network/src/shapes.js
index fab74462b3e1..3002502a700c 100644
--- a/packages/network/src/shapes.js
+++ b/packages/network/src/shapes.js
@@ -1,5 +1,6 @@
 // @ts-check
 import { M } from '@endo/patterns';
+import { VowShape, Vow$ } from '@agoric/vow';
 
 const Shape1 = /** @type {const} */ ({
   /**
@@ -9,12 +10,8 @@ const Shape1 = /** @type {const} */ ({
   Data: M.string(),
   Bytes: M.string(),
   Endpoint: M.string(),
-  Vow: M.tagged(
-    'Vow',
-    harden({
-      vowV0: M.remotable('VowV0'),
-    }),
-  ),
+  Vow$,
+  Vow: VowShape,
   ConnectionHandler: M.remotable('ConnectionHandler'),
   Connection: M.remotable('Connection'),
   InboundAttempt: M.remotable('InboundAttempt'),
@@ -27,7 +24,6 @@ const Shape1 = /** @type {const} */ ({
 
 const Shape2 = /** @type {const} */ ({
   ...Shape1,
-  Vow$: shape => M.or(shape, Shape1.Vow),
   AttemptDescription: M.splitRecord(
     { handler: Shape1.ConnectionHandler },
     { remoteAddress: Shape1.Endpoint, localAddress: Shape1.Endpoint },
diff --git a/packages/vats/src/localchain.js b/packages/vats/src/localchain.js
index 91f544bc39a1..7b529954430c 100644
--- a/packages/vats/src/localchain.js
+++ b/packages/vats/src/localchain.js
@@ -2,7 +2,7 @@
 import { E } from '@endo/far';
 import { M } from '@endo/patterns';
 import { AmountShape, BrandShape, PaymentShape } from '@agoric/ertp';
-import { Shape as NetworkShape } from '@agoric/network';
+import { Vow$ } from '@agoric/vow';
 
 const { Fail } = assert;
 const { Vow$ } = NetworkShape;
diff --git a/packages/vats/src/transfer.js b/packages/vats/src/transfer.js
index a9a04bd36a74..aa6991985087 100644
--- a/packages/vats/src/transfer.js
+++ b/packages/vats/src/transfer.js
@@ -1,6 +1,7 @@
 // @ts-check
 import { E } from '@endo/far';
 import { M } from '@endo/patterns';
+import { ReactionGuard } from '@agoric/vow';
 import { VTRANSFER_IBC_EVENT } from '@agoric/internal';
 import { coerceToByteSource, byteSourceToBase64 } from '@agoric/network';
 import { TargetAppI, AppTransformerI } from './bridge-target.js';
@@ -11,12 +12,6 @@ import { TargetAppI, AppTransformerI } from './bridge-target.js';
 
 const { Fail, bare } = assert;
 
-/**
- * The least possibly restrictive guard for a `watch` watcher's `onFulfilled` or
- * `onRejected` reaction
- */
-const ReactionGuard = M.call(M.any()).optional(M.any()).returns(M.any());
-
 /**
  * @param {import('@agoric/base-zone').Zone} zone
  * @param {import('@agoric/vow').VowTools} vowTools