diff --git a/yarn.lock b/yarn.lock
index 5988921..5e923ad 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -352,7 +352,7 @@ chownr@^1.1.1:
   resolved "https://registry.yarnpkg.com/chownr/-/chownr-1.1.1.tgz#54726b8b8fff4df053c42187e801fb4412df1494"
   integrity sha512-j38EvO5+LHX84jlo6h4UzmOwi0UgW61WRyPtJz4qaadK5eY3BTS5TY/S1Stc3Uk2lIM6TPevAlULiEJwie860g==
 
-chrome-headless-render-pdf@^1.8.0:
+chrome-headless-render-pdf@1.8.0:
   version "1.8.0"
   resolved "https://registry.yarnpkg.com/chrome-headless-render-pdf/-/chrome-headless-render-pdf-1.8.0.tgz#7d932e72508be819ddf13294f2f5b21ed653fb68"
   integrity sha512-dFm2oQc1btPxoNfG9vONY/yGU3el0HO6cp8YK3w4FgotNcoEXKsmE+WfmEO4A+FWF7eFshjvEKWjBp/gvyufuA==
@@ -1652,7 +1652,7 @@ node-pre-gyp@^0.10.0:
     semver "^5.3.0"
     tar "^4"
 
-nodemon@^1.18.9:
+nodemon@1.18.9:
   version "1.18.9"
   resolved "https://registry.yarnpkg.com/nodemon/-/nodemon-1.18.9.tgz#90b467efd3b3c81b9453380aeb2a2cba535d0ead"
   integrity sha512-oj/eEVTEI47pzYAjGkpcNw0xYwTl4XSTUQv2NPQI6PpN3b75PhpuYk3Vb3U80xHCyM2Jm+1j68ULHXl4OR3Afw==
@@ -2110,9 +2110,9 @@ semver-diff@^2.0.0:
     semver "^5.0.3"
 
 semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@^5.5.0:
-  version "5.6.0"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
-  integrity sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==
+  version "5.7.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.2.tgz#48d55db737c3287cd4835e17fa13feace1c41ef8"
+  integrity sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g==
 
 send@0.16.1:
   version "0.16.1"