diff --git a/package.json b/package.json
index fb6448b311e4540b81c57c3801544636fc1b8eb4..597972fbae01980692915ed03081b346e2e043bb 100644
--- a/package.json
+++ b/package.json
@@ -84,7 +84,6 @@
     "js-yaml": "3.8.2",
     "leveldown": "^4.0.1",
     "levelup": "^4.0.0",
-    "lokijs": "^1.5.3",
     "memdown": "^3.0.0",
     "merkle": "0.5.1",
     "moment": "2.19.3",
@@ -115,7 +114,6 @@
     "ws": "1.1.5"
   },
   "devDependencies": {
-    "@types/lokijs": "^1.5.2",
     "@types/mocha": "^2.2.41",
     "@types/node": "^8.0.9",
     "@types/should": "^8.3.0",
diff --git a/yarn.lock b/yarn.lock
index b16ca9b921ae20018f3ae1cceac648563a2430b0..54957fc71fdb458d9ea8631d35a9ba8273cadc20 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -51,10 +51,6 @@
   version "4.14.104"
   resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.104.tgz#53ee2357fa2e6e68379341d92eb2ecea4b11bb80"
 
-"@types/lokijs@^1.5.2":
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/@types/lokijs/-/lokijs-1.5.2.tgz#ed228f080033ce1fb16eff4acde65cb9ae0f1bf2"
-
 "@types/marked@0.3.0":
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/@types/marked/-/marked-0.3.0.tgz#583c223dd33385a1dda01aaf77b0cd0411c4b524"
@@ -2620,10 +2616,6 @@ log-driver@1.2.4:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/log-driver/-/log-driver-1.2.4.tgz#2d62d7faef45d8a71341961a04b0761eca99cfa3"
 
-lokijs@^1.5.3:
-  version "1.5.3"
-  resolved "https://registry.yarnpkg.com/lokijs/-/lokijs-1.5.3.tgz#6952722ffa3049a55a5e1c10ee4a0947a3e5e19b"
-
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"