diff --git a/package.json b/package.json
index 73781c44..f22859d4 100644
--- a/package.json
+++ b/package.json
@@ -46,15 +46,15 @@
     "@types/graphql": "14.0.3",
     "@types/jsonwebtoken": "8.3.0",
     "@types/node": "10.12.9",
-    "ava": "^1.0.0-rc.2",
+    "ava": "1.0.0-rc.2",
     "copyfiles": "2.1.0",
     "graphql": "14.0.2",
-    "husky": "^1.1.4",
-    "prettier": "^1.15.2",
-    "prettier-check": "^2.0.0",
-    "pretty-quick": "^1.8.0",
-    "semantic-release": "^15.12.0",
-    "ts-node": "^7.0.1",
+    "husky": "1.1.4",
+    "prettier": "1.15.2",
+    "prettier-check": "2.0.0",
+    "pretty-quick": "1.8.0",
+    "semantic-release": "15.12.0",
+    "ts-node": "7.0.1",
     "tslint": "5.11.0",
     "tslint-config-standard": "8.0.1",
     "typescript": "3.1.6"
diff --git a/yarn.lock b/yarn.lock
index fec3d2e8..52fb610f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -751,7 +751,7 @@ atob@^2.1.1:
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.1.tgz#ae2d5a729477f289d60dd7f96a6314a22dd6c22a"
   integrity sha1-ri1acpR38onWDdf5amMUoi3Wwio=
 
-ava@^1.0.0-rc.2:
+ava@1.0.0-rc.2:
   version "1.0.0-rc.2"
   resolved "https://registry.yarnpkg.com/ava/-/ava-1.0.0-rc.2.tgz#a2f63211d2ad1924fa4671ff3b29212b1da656af"
   integrity sha512-MxCW+bY+ddID5SrZZHbkuCiwsLup3Dn/bAgnrl6BzHYRI4RF9Yk5zv6S2L1TjqUF1LvRS8RiqZBrD+G6db+fEg==
@@ -2716,7 +2716,7 @@ humanize-ms@^1.2.1:
   dependencies:
     ms "^2.0.0"
 
-husky@^1.1.4:
+husky@1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/husky/-/husky-1.1.4.tgz#92f61383527d2571e9586234e5864356bfaceaa9"
   integrity sha512-cZjGpS7qsaBSo3fOMUuR7erQloX3l5XzL1v/RkIqU6zrQImDdU70z5Re9fGDp7+kbYlM2EtS4aYMlahBeiCUGw==
@@ -4844,14 +4844,14 @@ prepend-http@^1.0.1:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
-prettier-check@^2.0.0:
+prettier-check@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/prettier-check/-/prettier-check-2.0.0.tgz#edd086ee12d270579233ccb136a16e6afcfba1ae"
   integrity sha512-HZG53XQTJ9Cyi5hi1VFVVFxdlhITJybpZAch3ib9KqI05VUxV+F5Hip0GhSWRItrlDzVyqjSoDQ9KqIn7AHYyw==
   dependencies:
     execa "^0.6.0"
 
-prettier@^1.15.2:
+prettier@1.15.2:
   version "1.15.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.15.2.tgz#d31abe22afa4351efa14c7f8b94b58bb7452205e"
   integrity sha512-YgPLFFA0CdKL4Eg2IHtUSjzj/BWgszDHiNQAe0VAIBse34148whfdzLagRL+QiKS+YfK5ftB6X4v/MBw8yCoug==
@@ -4863,7 +4863,7 @@ pretty-ms@^4.0.0:
   dependencies:
     parse-ms "^2.0.0"
 
-pretty-quick@^1.8.0:
+pretty-quick@1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/pretty-quick/-/pretty-quick-1.8.0.tgz#067ebe744ddb4e1ed4e1ee1af9648815121f78fc"
   integrity sha512-qV25sQF/ivJpdZ5efwemQYkQJa7sp3HqT/Vf/7z5vGYMcq1VrT2lDpFKAxJPf6219N1YAdR8mGkIhPAZ1odTmQ==
@@ -5389,7 +5389,7 @@ sax@^1.2.4:
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
   integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
 
-semantic-release@^15.12.0:
+semantic-release@15.12.0:
   version "15.12.0"
   resolved "https://registry.yarnpkg.com/semantic-release/-/semantic-release-15.12.0.tgz#061f390bbf999ae56ae52a71f0a986659bbe556d"
   integrity sha512-s8JQ0twxSTat4aIKy8AVPm6gP+2OlkMyyTGeeWFopOXQVa3Bg0LPNjdhsUL90MHvh9aVy9k0/ym4DWmOcGxOMQ==
@@ -6081,7 +6081,7 @@ trim-right@^1.0.1:
   resolved "https://registry.yarnpkg.com/trim-right/-/trim-right-1.0.1.tgz#cb2e1203067e0c8de1f614094b9fe45704ea6003"
   integrity sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=
 
-ts-node@^7.0.1:
+ts-node@7.0.1, ts-node@^7.0.1:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/ts-node/-/ts-node-7.0.1.tgz#9562dc2d1e6d248d24bc55f773e3f614337d9baf"
   integrity sha512-BVwVbPJRspzNh2yfslyT1PSbl5uIk03EZlb493RKHN4qej/D06n1cEhjlOJG69oFsE7OT8XjpTUcYf6pKTLMhw==