diff --git a/package-lock.json b/package-lock.json
index 4ce2b00..ff48fec 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1767,6 +1767,11 @@
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       "dev": true
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+    "after": {
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+      "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
+      "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8="
+    },
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       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.2.tgz",
@@ -1961,6 +1966,11 @@
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+    "arraybuffer.slice": {
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz",
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+    },
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       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
@@ -2056,8 +2066,7 @@
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-      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==",
-      "dev": true
+      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ=="
     },
     "asynckit": {
       "version": "0.4.0",
@@ -2222,6 +2231,11 @@
         "resolve": "1.17.0"
       }
     },
+    "backo2": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/backo2/-/backo2-1.0.2.tgz",
+      "integrity": "sha1-MasayLEpNjRj41s+u2n038+6eUc="
+    },
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       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -2277,6 +2291,11 @@
         }
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+    "base64-arraybuffer": {
+      "version": "0.1.5",
+      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz",
+      "integrity": "sha1-c5JncZI7Whl0etZmqlzUv5xunOg="
+    },
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       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
@@ -2298,6 +2317,14 @@
         "tweetnacl": "0.14.5"
       }
     },
+    "better-assert": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/better-assert/-/better-assert-1.0.2.tgz",
+      "integrity": "sha1-QIZrnhueC1W0gYlDEeaPr/rrxSI=",
+      "requires": {
+        "callsite": "1.0.0"
+      }
+    },
     "bfj": {
       "version": "6.1.2",
       "resolved": "https://registry.npmjs.org/bfj/-/bfj-6.1.2.tgz",
@@ -2330,6 +2357,11 @@
         "file-uri-to-path": "1.0.0"
       }
     },
+    "blob": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/blob/-/blob-0.0.5.tgz",
+      "integrity": "sha512-gaqbzQPqOoamawKg0LGVd7SzLgXS+JH61oWprSLH+P+abTczqJbhTR8CmJ2u9/bUYNmHTGJx/UEmn6doAvvuig=="
+    },
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       "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
@@ -2738,6 +2770,11 @@
         "callsites": "0.2.0"
       }
     },
+    "callsite": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/callsite/-/callsite-1.0.0.tgz",
+      "integrity": "sha1-KAOY5dZkvXQDi28JBRU+borxvCA="
+    },
     "callsites": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-0.2.0.tgz",
@@ -3243,11 +3280,21 @@
       "integrity": "sha1-3dgA2gxmEnOTzKWVDqloo6rxJTs=",
       "dev": true
     },
+    "component-bind": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/component-bind/-/component-bind-1.0.0.tgz",
+      "integrity": "sha1-AMYIq33Nk4l8AAllGx06jh5zu9E="
+    },
     "component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
       "integrity": "sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg=="
     },
+    "component-inherit": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/component-inherit/-/component-inherit-0.0.3.tgz",
+      "integrity": "sha1-ZF/ErfWLcrZJ1crmUTVhnbJv8UM="
+    },
     "compressible": {
       "version": "2.0.18",
       "resolved": "https://registry.npmjs.org/compressible/-/compressible-2.0.18.tgz",
@@ -4503,6 +4550,59 @@
         "once": "1.4.0"
       }
     },
+    "engine.io-client": {
+      "version": "3.4.3",
+      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-3.4.3.tgz",
+      "integrity": "sha512-0NGY+9hioejTEJCaSJZfWZLk4FPI9dN+1H1C4+wj2iuFba47UgZbJzfWs4aNFajnX/qAaYKbe2lLTfEEWzCmcw==",
+      "requires": {
+        "component-emitter": "1.3.0",
+        "component-inherit": "0.0.3",
+        "debug": "4.1.1",
+        "engine.io-parser": "2.2.0",
+        "has-cors": "1.1.0",
+        "indexof": "0.0.1",
+        "parseqs": "0.0.5",
+        "parseuri": "0.0.5",
+        "ws": "6.1.4",
+        "xmlhttprequest-ssl": "1.5.5",
+        "yeast": "0.1.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "requires": {
+            "ms": "2.1.2"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+        },
+        "ws": {
+          "version": "6.1.4",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.4.tgz",
+          "integrity": "sha512-eqZfL+NE/YQc1/ZynhojeV8q+H050oR8AZ2uIev7RU10svA9ZnJUddHcOUZTJLinZ9yEfdA2kSATS2qZK5fhJA==",
+          "requires": {
+            "async-limiter": "1.0.1"
+          }
+        }
+      }
+    },
+    "engine.io-parser": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-2.2.0.tgz",
+      "integrity": "sha512-6I3qD9iUxotsC5HEMuuGsKA0cXerGz+4uGcXQEkfBidgKf0amsjrrtwcbwK/nzpZBxclXlV7gGl9dgWvu4LF6w==",
+      "requires": {
+        "after": "0.8.2",
+        "arraybuffer.slice": "0.0.7",
+        "base64-arraybuffer": "0.1.5",
+        "blob": "0.0.5",
+        "has-binary2": "1.0.3"
+      }
+    },
     "enhanced-resolve": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-4.1.1.tgz",
@@ -6122,6 +6222,26 @@
         }
       }
     },
+    "has-binary2": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/has-binary2/-/has-binary2-1.0.3.tgz",
+      "integrity": "sha512-G1LWKhDSvhGeAQ8mPVQlqNcOB2sJdwATtZKl2pDKKHfpf/rYj24lkinxf69blJbnsvtqqNU+L3SL50vzZhXOnw==",
+      "requires": {
+        "isarray": "2.0.1"
+      },
+      "dependencies": {
+        "isarray": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-2.0.1.tgz",
+          "integrity": "sha1-o32U7ZzaLVmGXJ92/llu4fM4dB4="
+        }
+      }
+    },
+    "has-cors": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/has-cors/-/has-cors-1.1.0.tgz",
+      "integrity": "sha1-XkdHk/fqmEPRu5nCPu9J/xJv/zk="
+    },
     "has-flag": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
@@ -6703,6 +6823,11 @@
       "integrity": "sha1-8w9xbI4r00bHtn0985FVZqfAVgc=",
       "dev": true
     },
+    "indexof": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/indexof/-/indexof-0.0.1.tgz",
+      "integrity": "sha1-gtwzbSMrkGIXnQWrMpOmYFn9Q10="
+    },
     "infer-owner": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/infer-owner/-/infer-owner-1.0.4.tgz",
@@ -8526,6 +8651,11 @@
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
       "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM="
     },
+    "object-component": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/object-component/-/object-component-0.0.3.tgz",
+      "integrity": "sha1-8MaapQ78lbhmwYb0AKM3acsvEpE="
+    },
     "object-copy": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/object-copy/-/object-copy-0.1.0.tgz",
@@ -8905,6 +9035,22 @@
         "parse5": "5.1.1"
       }
     },
+    "parseqs": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/parseqs/-/parseqs-0.0.5.tgz",
+      "integrity": "sha1-1SCKNzjkZ2bikbouoXNoSSGouJ0=",
+      "requires": {
+        "better-assert": "1.0.2"
+      }
+    },
+    "parseuri": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/parseuri/-/parseuri-0.0.5.tgz",
+      "integrity": "sha1-gCBKUNTbt3m/3G6+J3jZDkvOMgo=",
+      "requires": {
+        "better-assert": "1.0.2"
+      }
+    },
     "parseurl": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
@@ -11036,6 +11182,69 @@
         }
       }
     },
+    "socket.io-client": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-2.3.0.tgz",
+      "integrity": "sha512-cEQQf24gET3rfhxZ2jJ5xzAOo/xhZwK+mOqtGRg5IowZsMgwvHwnf/mCRapAAkadhM26y+iydgwsXGObBB5ZdA==",
+      "requires": {
+        "backo2": "1.0.2",
+        "base64-arraybuffer": "0.1.5",
+        "component-bind": "1.0.0",
+        "component-emitter": "1.2.1",
+        "debug": "4.1.1",
+        "engine.io-client": "3.4.3",
+        "has-binary2": "1.0.3",
+        "has-cors": "1.1.0",
+        "indexof": "0.0.1",
+        "object-component": "0.0.3",
+        "parseqs": "0.0.5",
+        "parseuri": "0.0.5",
+        "socket.io-parser": "3.3.0",
+        "to-array": "0.1.4"
+      },
+      "dependencies": {
+        "component-emitter": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
+          "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY="
+        },
+        "debug": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "requires": {
+            "ms": "2.1.2"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+        }
+      }
+    },
+    "socket.io-parser": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-3.3.0.tgz",
+      "integrity": "sha512-hczmV6bDgdaEbVqhAeVMM/jfUfzuEZHsQg6eOmLgJht6G3mPKMxYm75w2+qhAQZ+4X+1+ATZ+QFKeOZD5riHng==",
+      "requires": {
+        "component-emitter": "1.2.1",
+        "debug": "3.1.0",
+        "isarray": "2.0.1"
+      },
+      "dependencies": {
+        "component-emitter": {
+          "version": "1.2.1",
+          "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
+          "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY="
+        },
+        "isarray": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-2.0.1.tgz",
+          "integrity": "sha1-o32U7ZzaLVmGXJ92/llu4fM4dB4="
+        }
+      }
+    },
     "sockjs": {
       "version": "0.3.20",
       "resolved": "https://registry.npmjs.org/sockjs/-/sockjs-0.3.20.tgz",
@@ -11798,6 +12007,11 @@
         "os-tmpdir": "1.0.2"
       }
     },
+    "to-array": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/to-array/-/to-array-0.1.4.tgz",
+      "integrity": "sha1-F+bBH3PdTz10zaek/zI46a2b+JA="
+    },
     "to-arraybuffer": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz",
@@ -12998,6 +13212,11 @@
       "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-3.0.0.tgz",
       "integrity": "sha1-SWsswQnsqNus/i3HK2A8F8WHCtQ="
     },
+    "xmlhttprequest-ssl": {
+      "version": "1.5.5",
+      "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz",
+      "integrity": "sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4="
+    },
     "xtend": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
@@ -13146,6 +13365,11 @@
         }
       }
     },
+    "yeast": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
+      "integrity": "sha1-AI4G2AlDIMNy28L47XagymyKxBk="
+    },
     "yorkie": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/yorkie/-/yorkie-2.0.0.tgz",
diff --git a/package.json b/package.json
index e040b94..ed424ab 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "express": "^4.16.4",
     "jsonwebtoken": "^8.4.0",
     "nodemon": "^1.18.10",
+    "socket.io-client": "^2.3.0",
     "sqlite3": "^4.0.6",
     "vue": "^2.5.22",
     "vue-codemirror": "^4.0.6",
diff --git a/src/views/Room.vue b/src/views/Room.vue
index d23c55a..6fcc2dd 100644
--- a/src/views/Room.vue
+++ b/src/views/Room.vue
@@ -45,6 +45,9 @@ import 'codemirror/mode/python/python.js'
 // import theme style
 import 'codemirror/theme/monokai.css'
 
+// socketIO
+import socket from 'socket.io-client'
+
 export default {
   components: {
     codemirror,
@@ -77,7 +80,10 @@ export default {
       },
       showConsole: false,
       consoleOutput: '',
-      consoleExitCode: 0
+      consoleExitCode: 0,
+
+      // sockets
+      sockets: null
     }
   },
   computed: {
@@ -89,11 +95,22 @@ export default {
     const response = await this.$http.get(`rooms/${this.roomId}`)
     this.room = { ...this.room, ...response.data.room }
     this.setLanguageMode()
+
+    // connect to sockets
+    this.sockets = socket.connect(
+      `${process.env.VUE_APP_API_SOCKETS_URL}sockets/room`
+    )
+    this.sockets.emit('join-room', { roomId: this.roomId })
+    this.sockets.on('code-edited', this.syncCode)
   },
   async mounted() {},
   methods: {
     onCmCodeChange(newCode) {
       this.room.code = newCode
+      this.sockets.emit('code-edited', {
+        roomId: this.room.id,
+        code: this.room.code
+      })
     },
     async updateRoom() {
       await this.$http.put(`rooms/${this.roomId}`, this.room)
@@ -137,6 +154,12 @@ export default {
         this.consoleOutput = runResult.run_status.stderr
         this.consoleExitCode = 1
       }
+    },
+    // end of toolbar event handers
+
+    // sockets event handlers
+    syncCode(data) {
+      this.room.code = data.code
     }
   }
 }