diff --git a/examples/cra-with-nav/yarn.lock b/examples/cra-with-nav/yarn.lock
index af5b7b2..f97663d 100644
--- a/examples/cra-with-nav/yarn.lock
+++ b/examples/cra-with-nav/yarn.lock
@@ -1773,8 +1773,8 @@ css-to-react-native@^2.0.3:
     postcss-value-parser "^3.3.0"
 
 css-what@2.1:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.0.tgz#9467d032c38cfaefb9f2d79501253062f87fa1bd"
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.3.tgz#a6d7604573365fe74686c3f311c56513d88285f2"
 
 cssesc@^0.1.0:
   version "0.1.0"
@@ -2525,7 +2525,7 @@ expand-tilde@^2.0.0, expand-tilde@^2.0.2:
 
 express@^4.16.2:
   version "4.16.3"
-  resolved "http://registry.npmjs.org/express/-/express-4.16.3.tgz#6af8a502350db3246ecc4becf6b5a34d22f7ed53"
+  resolved "https://registry.npmjs.org/express/-/express-4.16.3.tgz#6af8a502350db3246ecc4becf6b5a34d22f7ed53"
   dependencies:
     accepts "~1.3.5"
     array-flatten "1.1.1"
@@ -7169,7 +7169,7 @@ yargs-parser@^7.0.0:
 
 yargs@6.6.0:
   version "6.6.0"
-  resolved "http://registry.npmjs.org/yargs/-/yargs-6.6.0.tgz#782ec21ef403345f830a808ca3d513af56065208"
+  resolved "https://registry.npmjs.org/yargs/-/yargs-6.6.0.tgz#782ec21ef403345f830a808ca3d513af56065208"
   dependencies:
     camelcase "^3.0.0"
     cliui "^3.2.0"