diff --git a/packages/tendermint-rpc/package.json b/packages/tendermint-rpc/package.json
index 71ec1ea031..597aa9f824 100644
--- a/packages/tendermint-rpc/package.json
+++ b/packages/tendermint-rpc/package.json
@@ -45,8 +45,8 @@
   "dependencies": {
     "@cosmjs/crypto": "^0.20.0",
     "@cosmjs/encoding": "^0.20.0",
+    "@cosmjs/json-rpc": "^0.20.0",
     "@cosmjs/math": "^0.20.0",
-    "@iov/jsonrpc": "^2.3.2",
     "@iov/socket": "^2.3.2",
     "axios": "^0.19.0",
     "readonly-date": "^1.0.0",
diff --git a/yarn.lock b/yarn.lock
index 02e874ef63..e784078847 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -92,25 +92,6 @@
     unique-filename "^1.1.1"
     which "^1.3.1"
 
-"@iov/encoding@^2.3.2":
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/@iov/encoding/-/encoding-2.3.2.tgz#4b37966af0345a6bc904bb58189dc1ea9d14ad9b"
-  integrity sha512-viioqo1flTkG4Oxb0PvoBXGozHq9fObAgAL4dRHJe9zmChE77EBX2Y5u0nabd2JwAhEbir56AtsrUe4dOrtd5w==
-  dependencies:
-    base64-js "^1.3.0"
-    bech32 "^1.1.4"
-    bn.js "^4.11.8"
-    readonly-date "^1.0.0"
-
-"@iov/jsonrpc@^2.3.2":
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/@iov/jsonrpc/-/jsonrpc-2.3.2.tgz#5cdfa56333741073cc00f17d54efb9f526b9705a"
-  integrity sha512-fPryTYZ4na1F/K0AF4eRjf1mwg97s8N/AgvELHyqpm7Bq9zvV0/ZBPvzjV1mqmPMfONx91qLIkpDguwmwEb8NA==
-  dependencies:
-    "@iov/encoding" "^2.3.2"
-    "@iov/stream" "^2.3.2"
-    xstream "^11.10.0"
-
 "@iov/socket@^2.3.2":
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/@iov/socket/-/socket-2.3.2.tgz#adc8ef389bafc5380e1c7415fb21f9a890d79195"