diff --git a/packages/socket/patches/socket.io-parser+4.0.4.patch b/packages/socket/patches/socket.io-parser+4.0.4.patch
index 5089fa3f14..7eed9769e7 100644
--- a/packages/socket/patches/socket.io-parser+4.0.4.patch
+++ b/packages/socket/patches/socket.io-parser+4.0.4.patch
@@ -115,7 +115,7 @@ index 0ef9f80..4cd787e 100644
      catch (e) {
          return false;
 diff --git a/node_modules/socket.io-parser/dist/is-binary.js b/node_modules/socket.io-parser/dist/is-binary.js
-index 4b7c234..95469f7 100644
+index 4b7c234..15ed5b1 100644
 --- a/node_modules/socket.io-parser/dist/is-binary.js
 +++ b/node_modules/socket.io-parser/dist/is-binary.js
 @@ -1,6 +1,7 @@
@@ -126,7 +126,7 @@ index 4b7c234..95469f7 100644
  const withNativeArrayBuffer = typeof ArrayBuffer === "function";
  const isView = (obj) => {
      return typeof ArrayBuffer.isView === "function"
-@@ -22,13 +23,18 @@ const withNativeFile = typeof File === "function" ||
+@@ -22,16 +23,21 @@ const withNativeFile = typeof File === "function" ||
  function isBinary(obj) {
      return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||
          (withNativeBlob && obj instanceof Blob) ||
@@ -146,7 +146,11 @@ index 4b7c234..95469f7 100644
 +    known.push(obj)
      if (Array.isArray(obj)) {
          for (let i = 0, l = obj.length; i < l; i++) {
-             if (hasBinary(obj[i])) {
+-            if (hasBinary(obj[i])) {
++            if (hasBinary(obj[i], known)) {
+                 return true;
+             }
+         }
 @@ -43,10 +49,10 @@ function hasBinary(obj, toJSON) {
      if (obj.toJSON &&
          typeof obj.toJSON === "function" &&
diff --git a/packages/socket/test/socket_spec.js b/packages/socket/test/socket_spec.js
index d903d51775..09383c713b 100644
--- a/packages/socket/test/socket_spec.js
+++ b/packages/socket/test/socket_spec.js
@@ -114,6 +114,41 @@ describe('Socket', function () {
       }
     })
 
+    it('correctly encodes and decodes circular data in array', (done) => {
+      const encoder = new parser.Encoder()
+
+      const circularObj = {
+        foo: {},
+      }
+
+      circularObj.foo.circularArray = [circularObj, circularObj]
+
+      const obj = {
+        type: PacketType.EVENT,
+        data: ['a', circularObj],
+        id: 23,
+        nsp: '/cool',
+      }
+
+      const originalData = obj.data
+
+      const encodedPackets = encoder.encode(obj)
+
+      const decoder = new parser.Decoder()
+
+      decoder.on('decoded', (packet) => {
+        obj.data = originalData
+        expect(packet.data[1] === packet.data[1].foo.circularArray[0]).to.be.true
+        expect(packet.data[1] === packet.data[1].foo.circularArray[1]).to.be.true
+        expect(packet).to.eql(obj)
+        done()
+      })
+
+      for (let i = 0; i < encodedPackets.length; i++) {
+        decoder.add(encodedPackets[i])
+      }
+    })
+
     it('correctly encodes and decodes circular data containing binary', (done) => {
       const encoder = new parser.Encoder()