diff --git a/package.json b/package.json
index 61fd20213..542f9049c 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "parcel-bundler": "^1.12.4",
     "prettier": "^1.19.1",
     "tslint": "^6.1.3",
-    "yarn-deduplicate": "^2.0.0"
+    "yarn-deduplicate": "^2.1.1"
   },
   "dependencies": {
     "@sourcegraph/typescript-language-server": "^0.3.7-fork",
diff --git a/yarn.lock b/yarn.lock
index f1cac2a3b..4f5633867 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2082,10 +2082,10 @@ commander@^2.11.0, commander@^2.12.1, commander@^2.19.0, commander@^2.20.0:
   resolved "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
   integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
-commander@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.npmjs.org/commander/-/commander-4.1.1.tgz#9fd602bd936294e9e9ef46a3f4d6964044b18068"
-  integrity sha512-NOKm8xhkzAjzFx8B2v5OAHT+u5pRQc2UCa2Vq9jYL/31o2wi9mxBA7LIFs3sV5VSC49z6pEhfbMULvShKj26WA==
+commander@^5.1.0:
+  version "5.1.0"
+  resolved "https://registry.npmjs.org/commander/-/commander-5.1.0.tgz#46abbd1652f8e059bddaef99bbdcb2ad9cf179ae"
+  integrity sha512-P0CysNDQ7rtVw4QIQtm+MRxV66vKFSvlsQvGYXZWR3qFU0jlMKHZZZgw8e+8DSah4UDKMqnknRDQz+xuQXQ/Zg==
 
 compare-versions@^3.5.1:
   version "3.6.0"
@@ -4410,6 +4410,13 @@ lru-cache@^5.1.1:
   dependencies:
     yallist "^3.0.2"
 
+lru-cache@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
+  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
+  dependencies:
+    yallist "^4.0.0"
+
 lru-queue@0.1:
   version "0.1.0"
   resolved "https://registry.npmjs.org/lru-queue/-/lru-queue-0.1.0.tgz#2738bd9f0d3cf4f84490c5736c48699ac632cda3"
@@ -6353,16 +6360,18 @@ semver@7.0.0:
   resolved "https://registry.npmjs.org/semver/-/semver-7.0.0.tgz#5f3ca35761e47e05b206c6daff2cf814f0316b8e"
   integrity sha512-+GB6zVA9LWh6zovYQLALHwv5rb2PHGlJi3lfiqIHxR0uuwCgefcOJc59v9fv1w8GbStwxuuqqAjI9NMAOOgq1A==
 
-semver@7.1.3, semver@^7.0.0, semver@^7.1.3:
-  version "7.1.3"
-  resolved "https://registry.npmjs.org/semver/-/semver-7.1.3.tgz#e4345ce73071c53f336445cfc19efb1c311df2a6"
-  integrity sha512-ekM0zfiA9SCBlsKa2X1hxyxiI4L3B6EbVJkkdgQXnSEEaHlGdvyodMruTiulSRWMMB4NeIuYNMC9rTKTz97GxA==
-
 semver@^6.3.0:
   version "6.3.0"
   resolved "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
   integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
 
+semver@^7.0.0, semver@^7.1.3, semver@^7.3.2:
+  version "7.3.5"
+  resolved "https://registry.npmjs.org/semver/-/semver-7.3.5.tgz#0b621c879348d8998e4b0e4be94b3f12e6018ef7"
+  integrity sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==
+  dependencies:
+    lru-cache "^6.0.0"
+
 send@0.17.1:
   version "0.17.1"
   resolved "https://registry.npmjs.org/send/-/send-0.17.1.tgz#c1d8b059f7900f7466dd4938bdc44e11ddb376c8"
@@ -7608,14 +7617,14 @@ yargs@^14.0.0:
     y18n "^4.0.0"
     yargs-parser "^15.0.0"
 
-yarn-deduplicate@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.npmjs.org/yarn-deduplicate/-/yarn-deduplicate-2.0.0.tgz#c1197eec02f3a73e29d612adb3f6e9a318519564"
-  integrity sha512-DdydO5kmIj5QgiTpURWM4xsobIDS+UBs3UB1ySO9uawkMn0cnAqjVkRHmkI6oetNdoFmxe2FWjjekppaXMX9WA==
+yarn-deduplicate@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.npmjs.org/yarn-deduplicate/-/yarn-deduplicate-2.1.1.tgz#500a3010e4bdee3c3250936e210910c7cae3d75d"
+  integrity sha512-lbFJGOMnqG/ncGjNBUt+JG4qfAGqeh8o9i4i5LXqNBdQ8ov8av6T1jizWQqr+zLPLCOqp/BYBZz8FymPQSR4RA==
   dependencies:
     "@yarnpkg/lockfile" "^1.1.0"
-    commander "^4.1.1"
-    semver "7.1.3"
+    commander "^5.1.0"
+    semver "^7.3.2"
 
 yarn@^1.22.1:
   version "1.22.1"