diff --git a/package.json b/package.json
index 6188cabf..34545b77 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "eth-json-rpc-errors": "^2.0.2",
     "eth-json-rpc-filters": "^4.1.1",
     "eth-json-rpc-infura": "^4.0.1",
-    "eth-json-rpc-middleware": "^4.1.5",
+    "eth-json-rpc-middleware": "^6.0.0",
     "eth-sig-util": "^1.4.2",
     "ethereumjs-block": "^1.2.2",
     "ethereumjs-tx": "^1.2.0",
diff --git a/yarn.lock b/yarn.lock
index fac59182..6a17a693 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3315,7 +3315,7 @@ eth-json-rpc-middleware@^1.5.0:
     promise-to-callback "^1.0.0"
     tape "^4.6.3"
 
-eth-json-rpc-middleware@^4.1.4, eth-json-rpc-middleware@^4.1.5:
+eth-json-rpc-middleware@^4.1.4:
   version "4.4.1"
   resolved "https://registry.yarnpkg.com/eth-json-rpc-middleware/-/eth-json-rpc-middleware-4.4.1.tgz#07d3dd0724c24a8d31e4a172ee96271da71b4228"
   integrity sha512-yoSuRgEYYGFdVeZg3poWOwAlRI+MoBIltmOB86MtpoZjvLbou9EB/qWMOWSmH2ryCWLW97VYY6NWsmWm3OAA7A==
@@ -3335,6 +3335,23 @@ eth-json-rpc-middleware@^4.1.4, eth-json-rpc-middleware@^4.1.5:
     pify "^3.0.0"
     safe-event-emitter "^1.0.1"
 
+eth-json-rpc-middleware@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/eth-json-rpc-middleware/-/eth-json-rpc-middleware-6.0.0.tgz#4fe16928b34231a2537856f08a5ebbc3d0c31175"
+  integrity sha512-qqBfLU2Uq1Ou15Wox1s+NX05S9OcAEL4JZ04VZox2NS0U+RtCMjSxzXhLFWekdShUPZ+P8ax3zCO2xcPrp6XJQ==
+  dependencies:
+    btoa "^1.2.1"
+    clone "^2.1.1"
+    eth-query "^2.1.2"
+    eth-rpc-errors "^3.0.0"
+    eth-sig-util "^1.4.2"
+    ethereumjs-util "^5.1.2"
+    json-rpc-engine "^5.3.0"
+    json-stable-stringify "^1.0.1"
+    node-fetch "^2.6.1"
+    pify "^3.0.0"
+    safe-event-emitter "^1.0.1"
+
 eth-lib@0.2.7:
   version "0.2.7"
   resolved "https://registry.yarnpkg.com/eth-lib/-/eth-lib-0.2.7.tgz#2f93f17b1e23aec3759cd4a3fe20c1286a3fc1ca"
@@ -3364,6 +3381,13 @@ eth-query@^2.0.2, eth-query@^2.1.0, eth-query@^2.1.2:
     json-rpc-random-id "^1.0.0"
     xtend "^4.0.1"
 
+eth-rpc-errors@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/eth-rpc-errors/-/eth-rpc-errors-3.0.0.tgz#d7b22653c70dbf9defd4ef490fd08fe70608ca10"
+  integrity sha512-iPPNHPrLwUlR9xCSYm7HHQjWBasor3+KZfRvwEWxMz3ca0yqnlBeJrnyphkGIXZ4J7AMAaOLmwy4AWhnxOiLxg==
+  dependencies:
+    fast-safe-stringify "^2.0.6"
+
 eth-sig-util@2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/eth-sig-util/-/eth-sig-util-2.3.0.tgz#c54a6ac8e8796f7e25f59cf436982a930e645231"
@@ -5192,6 +5216,14 @@ json-rpc-engine@^5.1.3:
     promise-to-callback "^1.0.0"
     safe-event-emitter "^1.0.1"
 
+json-rpc-engine@^5.3.0:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-5.3.0.tgz#7dc7291766b28766ebda33eb6d3f4c6301c44ff4"
+  integrity sha512-+diJ9s8rxB+fbJhT7ZEf8r8spaLRignLd8jTgQ/h5JSGppAHGtNMZtCoabipCaleR1B3GTGxbXBOqhaJSGmPGQ==
+  dependencies:
+    eth-rpc-errors "^3.0.0"
+    safe-event-emitter "^1.0.1"
+
 json-rpc-error@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/json-rpc-error/-/json-rpc-error-2.0.0.tgz#a7af9c202838b5e905c7250e547f1aff77258a02"
@@ -5975,6 +6007,11 @@ node-fetch@2.1.2:
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.1.2.tgz#ab884e8e7e57e38a944753cec706f788d1768bb5"
   integrity sha1-q4hOjn5X44qUR1POxwb3iNF2i7U=
 
+node-fetch@^2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
+  integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
+
 node-fetch@~1.7.1:
   version "1.7.3"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"