diff --git a/packages/bcp/package.json b/packages/bcp/package.json
index 216d6ef7a3..1b26354d1d 100644
--- a/packages/bcp/package.json
+++ b/packages/bcp/package.json
@@ -41,10 +41,10 @@
   "dependencies": {
     "@cosmjs/crypto": "^0.8.0",
     "@cosmjs/sdk38": "^0.8.0",
+    "@cosmjs/utils": "^0.8.0",
     "@iov/bcp": "^2.3.2",
     "@iov/encoding": "^2.3.2",
     "@iov/stream": "^2.3.2",
-    "@iov/utils": "^2.3.2",
     "bn.js": "^5.1.1",
     "fast-deep-equal": "^3.1.1",
     "readonly-date": "^1.0.0",
diff --git a/packages/bcp/src/cosmosconnection.spec.ts b/packages/bcp/src/cosmosconnection.spec.ts
index 0f2a903638..e47758dcf8 100644
--- a/packages/bcp/src/cosmosconnection.spec.ts
+++ b/packages/bcp/src/cosmosconnection.spec.ts
@@ -1,5 +1,6 @@
 import { Random, Secp256k1, Secp256k1Signature, Sha256 } from "@cosmjs/crypto";
 import { decodeSignature } from "@cosmjs/sdk38";
+import { assert } from "@cosmjs/utils";
 import {
   Account,
   Address,
@@ -20,7 +21,6 @@ import {
 } from "@iov/bcp";
 import { Bech32, fromBase64 } from "@iov/encoding";
 import { HdPaths, Secp256k1HdWallet, UserProfile } from "@iov/keycontrol";
-import { assert } from "@iov/utils";
 import BN from "bn.js";
 
 import { CosmosConnection, TokenConfiguration } from "./cosmosconnection";
diff --git a/packages/cli/package.json b/packages/cli/package.json
index 9c0f7526bc..3e41754520 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -41,8 +41,8 @@
     "@cosmjs/cosmwasm": "^0.8.0",
     "@cosmjs/crypto": "^0.8.0",
     "@cosmjs/sdk38": "^0.8.0",
+    "@cosmjs/utils": "^0.8.0",
     "@iov/encoding": "^2.3.2",
-    "@iov/utils": "^2.3.2",
     "axios": "^0.19.2",
     "babylon": "^6.18.0",
     "colors": "^1.3.3",
diff --git a/packages/cli/src/cli.ts b/packages/cli/src/cli.ts
index 34f58eee94..6b960ef5b3 100644
--- a/packages/cli/src/cli.ts
+++ b/packages/cli/src/cli.ts
@@ -118,7 +118,7 @@ export function main(originalArgs: readonly string[]): void {
         "Uint64",
       ],
     ],
-    ["@iov/utils", ["assert", "sleep"]],
+    ["@cosmjs/utils", ["assert", "sleep"]],
   ]);
 
   console.info(colors.green("Initializing session for you. Have fun!"));
diff --git a/packages/cosmwasm/package.json b/packages/cosmwasm/package.json
index 0099399f64..ccf4506929 100644
--- a/packages/cosmwasm/package.json
+++ b/packages/cosmwasm/package.json
@@ -38,8 +38,8 @@
   "dependencies": {
     "@cosmjs/crypto": "^0.8.0",
     "@cosmjs/sdk38": "^0.8.0",
+    "@cosmjs/utils": "^0.8.0",
     "@iov/encoding": "^2.3.2",
-    "@iov/utils": "^2.3.2",
     "axios": "^0.19.0",
     "fast-deep-equal": "^3.1.1",
     "pako": "^1.0.11"
diff --git a/packages/cosmwasm/src/cosmwasmclient.searchtx.spec.ts b/packages/cosmwasm/src/cosmwasmclient.searchtx.spec.ts
index f278f0baf5..ca14c2d1fe 100644
--- a/packages/cosmwasm/src/cosmwasmclient.searchtx.spec.ts
+++ b/packages/cosmwasm/src/cosmwasmclient.searchtx.spec.ts
@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/camelcase */
 import { Coin, CosmosSdkTx, isMsgSend, makeSignBytes, MsgSend, Secp256k1Pen } from "@cosmjs/sdk38";
+import { assert, sleep } from "@cosmjs/utils";
 import { Uint53 } from "@iov/encoding";
-import { assert, sleep } from "@iov/utils";
 
 import { CosmWasmClient } from "./cosmwasmclient";
 import { isMsgExecuteContract, isMsgInstantiateContract } from "./msgs";
diff --git a/packages/cosmwasm/src/cosmwasmclient.spec.ts b/packages/cosmwasm/src/cosmwasmclient.spec.ts
index 90541a88fa..744f53974b 100644
--- a/packages/cosmwasm/src/cosmwasmclient.spec.ts
+++ b/packages/cosmwasm/src/cosmwasmclient.spec.ts
@@ -1,8 +1,8 @@
 /* eslint-disable @typescript-eslint/camelcase */
 import { Sha256 } from "@cosmjs/crypto";
 import { makeSignBytes, MsgSend, Secp256k1Pen, StdFee } from "@cosmjs/sdk38";
+import { assert, sleep } from "@cosmjs/utils";
 import { Bech32, fromHex, fromUtf8, toAscii, toBase64 } from "@iov/encoding";
-import { assert, sleep } from "@iov/utils";
 import { ReadonlyDate } from "readonly-date";
 
 import { Code, CosmWasmClient, PrivateCosmWasmClient } from "./cosmwasmclient";
diff --git a/packages/cosmwasm/src/restclient.spec.ts b/packages/cosmwasm/src/restclient.spec.ts
index c73b97e908..3789f60bab 100644
--- a/packages/cosmwasm/src/restclient.spec.ts
+++ b/packages/cosmwasm/src/restclient.spec.ts
@@ -15,8 +15,8 @@ import {
   StdSignature,
   StdTx,
 } from "@cosmjs/sdk38";
+import { assert, sleep } from "@cosmjs/utils";
 import { Bech32, fromAscii, fromBase64, fromHex, toAscii, toBase64, toHex } from "@iov/encoding";
-import { assert, sleep } from "@iov/utils";
 import { ReadonlyDate } from "readonly-date";
 
 import { findAttribute, parseLogs } from "./logs";
diff --git a/packages/cosmwasm/src/signingcosmwasmclient.spec.ts b/packages/cosmwasm/src/signingcosmwasmclient.spec.ts
index 3d70157120..69d4995f8e 100644
--- a/packages/cosmwasm/src/signingcosmwasmclient.spec.ts
+++ b/packages/cosmwasm/src/signingcosmwasmclient.spec.ts
@@ -1,7 +1,7 @@
 import { Sha256 } from "@cosmjs/crypto";
 import { Coin, Secp256k1Pen } from "@cosmjs/sdk38";
+import { assert } from "@cosmjs/utils";
 import { toHex } from "@iov/encoding";
-import { assert } from "@iov/utils";
 
 import { PrivateCosmWasmClient } from "./cosmwasmclient";
 import { RestClient } from "./restclient";
diff --git a/packages/faucet/package.json b/packages/faucet/package.json
index ed9622c196..dcaae4ff1d 100644
--- a/packages/faucet/package.json
+++ b/packages/faucet/package.json
@@ -37,8 +37,8 @@
   "dependencies": {
     "@cosmjs/crypto": "^0.8.0",
     "@cosmjs/sdk38": "^0.8.0",
+    "@cosmjs/utils": "^0.8.0",
     "@iov/encoding": "^2.3.2",
-    "@iov/utils": "^2.3.2",
     "@koa/cors": "^3.0.0",
     "axios": "^0.19.0",
     "koa": "^2.11.0",
diff --git a/packages/faucet/src/faucet.spec.ts b/packages/faucet/src/faucet.spec.ts
index de2721b6cc..2809cd1cb2 100644
--- a/packages/faucet/src/faucet.spec.ts
+++ b/packages/faucet/src/faucet.spec.ts
@@ -1,7 +1,7 @@
 import { Random } from "@cosmjs/crypto";
 import { CosmosClient } from "@cosmjs/sdk38";
+import { assert } from "@cosmjs/utils";
 import { Bech32 } from "@iov/encoding";
-import { assert } from "@iov/utils";
 
 import { Faucet } from "./faucet";
 import { TokenConfiguration } from "./types";
diff --git a/packages/faucet/src/faucet.ts b/packages/faucet/src/faucet.ts
index 9fe0655e1a..6e9f78fd92 100644
--- a/packages/faucet/src/faucet.ts
+++ b/packages/faucet/src/faucet.ts
@@ -1,5 +1,5 @@
 import { CosmosClient, Pen, SigningCosmosClient } from "@cosmjs/sdk38";
-import { sleep } from "@iov/utils";
+import { sleep } from "@cosmjs/utils";
 
 import { debugAccount, logAccountsState, logSendJob } from "./debugging";
 import { createPens } from "./profile";
diff --git a/packages/sdk38/package.json b/packages/sdk38/package.json
index 7287eacf93..3b655453be 100644
--- a/packages/sdk38/package.json
+++ b/packages/sdk38/package.json
@@ -37,8 +37,8 @@
   },
   "dependencies": {
     "@cosmjs/crypto": "^0.8.0",
+    "@cosmjs/utils": "^0.8.0",
     "@iov/encoding": "^2.3.2",
-    "@iov/utils": "^2.3.2",
     "axios": "^0.19.0",
     "fast-deep-equal": "^3.1.1"
   },
diff --git a/packages/sdk38/src/cosmosclient.searchtx.spec.ts b/packages/sdk38/src/cosmosclient.searchtx.spec.ts
index 3cf19b051e..25d0670012 100644
--- a/packages/sdk38/src/cosmosclient.searchtx.spec.ts
+++ b/packages/sdk38/src/cosmosclient.searchtx.spec.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/camelcase */
+import { assert, sleep } from "@cosmjs/utils";
 import { Uint53 } from "@iov/encoding";
-import { assert, sleep } from "@iov/utils";
 
 import { Coin } from "./coins";
 import { CosmosClient } from "./cosmosclient";
diff --git a/packages/sdk38/src/cosmosclient.spec.ts b/packages/sdk38/src/cosmosclient.spec.ts
index 12bce12b34..3f7778995d 100644
--- a/packages/sdk38/src/cosmosclient.spec.ts
+++ b/packages/sdk38/src/cosmosclient.spec.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/camelcase */
-import { sleep } from "@iov/utils";
+import { sleep } from "@cosmjs/utils";
 import { ReadonlyDate } from "readonly-date";
 
 import { CosmosClient, PrivateCosmWasmClient } from "./cosmosclient";
diff --git a/packages/sdk38/src/restclient.spec.ts b/packages/sdk38/src/restclient.spec.ts
index 3e919e1445..b014803a0e 100644
--- a/packages/sdk38/src/restclient.spec.ts
+++ b/packages/sdk38/src/restclient.spec.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/camelcase */
+import { assert, sleep } from "@cosmjs/utils";
 import { fromBase64 } from "@iov/encoding";
-import { assert, sleep } from "@iov/utils";
 import { ReadonlyDate } from "readonly-date";
 
 import { rawSecp256k1PubkeyToAddress } from "./address";
diff --git a/packages/sdk38/src/signingcosmosclient.spec.ts b/packages/sdk38/src/signingcosmosclient.spec.ts
index 5054d92580..f2c186ba29 100644
--- a/packages/sdk38/src/signingcosmosclient.spec.ts
+++ b/packages/sdk38/src/signingcosmosclient.spec.ts
@@ -1,4 +1,4 @@
-import { assert } from "@iov/utils";
+import { assert } from "@cosmjs/utils";
 
 import { Coin } from "./coins";
 import { PrivateCosmWasmClient } from "./cosmosclient";
diff --git a/yarn.lock b/yarn.lock
index 8dd5abc7f0..3c9a67f493 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -157,11 +157,6 @@
   dependencies:
     xstream "^11.10.0"
 
-"@iov/utils@^2.3.2":
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/@iov/utils/-/utils-2.3.2.tgz#a499ec304b4febaeb3af309dedbb30e14a09c91e"
-  integrity sha512-mtdZ8zh/LGjwA72HofOc8JF3KN1Rc1jwaQATePLDwIIJRw0AJXx2GLRBBRjja41huuw9ND0E2mQWlYLtYsNnUA==
-
 "@koa/cors@^3.0.0":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@koa/cors/-/cors-3.0.0.tgz#df021b4df2dadf1e2b04d7c8ddf93ba2d42519cb"