diff --git a/06-templating/a-simple-templating/yarn.lock b/06-templating/a-simple-templating/yarn.lock
index f339cc4..44a89e9 100644
--- a/06-templating/a-simple-templating/yarn.lock
+++ b/06-templating/a-simple-templating/yarn.lock
@@ -1248,7 +1248,7 @@ caniuse-lite@^1.0.30000748, caniuse-lite@^1.0.30000784:
 
 capture-stack-trace@^1.0.0:
   version "1.0.0"
-  resolved "http://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.0.tgz#4a6fa07399c26bba47f0b2496b4d0fb408c5550d"
+  resolved "https://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.0.tgz#4a6fa07399c26bba47f0b2496b4d0fb408c5550d"
 
 case-sensitive-paths-webpack-plugin@2.1.1:
   version "2.1.1"
@@ -1550,7 +1550,7 @@ create-ecdh@^4.0.0:
 
 create-error-class@^3.0.1:
   version "3.0.2"
-  resolved "http://registry.npmjs.org/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
+  resolved "https://registry.npmjs.org/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
   dependencies:
     capture-stack-trace "^1.0.0"
 
@@ -3690,6 +3690,10 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
+"js-tokens@^3.0.0 || ^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
+
 js-yaml@^3.4.3, js-yaml@^3.7.0, js-yaml@^3.9.1:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
@@ -3967,6 +3971,12 @@ loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
   dependencies:
     js-tokens "^3.0.0"
 
+loose-envify@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
+  dependencies:
+    js-tokens "^3.0.0 || ^4.0.0"
+
 loud-rejection@^1.0.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/loud-rejection/-/loud-rejection-1.6.0.tgz#5b46f80147edee578870f086d04821cf998e551f"
@@ -4984,7 +4994,7 @@ promise@^7.1.1:
   dependencies:
     asap "~2.0.3"
 
-prop-types@^15.5.10, prop-types@^15.6.0:
+prop-types@^15.5.10:
   version "15.6.0"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
   dependencies:
@@ -4992,6 +5002,14 @@ prop-types@^15.5.10, prop-types@^15.6.0:
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
+prop-types@^15.6.2:
+  version "15.8.1"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.8.1.tgz#67d87bf1a694f48435cf332c24af10214a3140b5"
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.13.1"
+
 proxy-addr@~2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.2.tgz#6571504f47bb988ec8180253f85dd7e14952bdec"
@@ -5131,19 +5149,23 @@ react-dev-utils@^4.2.1:
     strip-ansi "3.0.1"
     text-table "0.2.0"
 
-react-dom@16.2.0:
-  version "16.2.0"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.2.0.tgz#69003178601c0ca19b709b33a83369fe6124c044"
+react-dom@^16.2.0:
+  version "16.14.0"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.14.0.tgz#7ad838ec29a777fb3c75c3a190f661cf92ab8b89"
   dependencies:
-    fbjs "^0.8.16"
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
-    prop-types "^15.6.0"
+    prop-types "^15.6.2"
+    scheduler "^0.19.1"
 
 react-error-overlay@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/react-error-overlay/-/react-error-overlay-3.0.0.tgz#c2bc8f4d91f1375b3dad6d75265d51cd5eeaf655"
 
+react-is@^16.13.1:
+  version "16.13.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
+
 react-scripts@1.0.17:
   version "1.0.17"
   resolved "https://registry.yarnpkg.com/react-scripts/-/react-scripts-1.0.17.tgz#c30029123b561a060227af4d7797d50a222d3fbf"
@@ -5187,18 +5209,17 @@ react-scripts@1.0.17:
   optionalDependencies:
     fsevents "1.1.2"
 
-react@16.2.0:
-  version "16.2.0"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.2.0.tgz#a31bd2dab89bff65d42134fa187f24d054c273ba"
+react@^16.2.0:
+  version "16.14.0"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.14.0.tgz#94d776ddd0aaa37da3eda8fc5b6b18a4c9a3114d"
   dependencies:
-    fbjs "^0.8.16"
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
-    prop-types "^15.6.0"
+    prop-types "^15.6.2"
 
 read-all-stream@^3.0.0:
   version "3.1.0"
-  resolved "http://registry.npmjs.org/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"
+  resolved "https://registry.npmjs.org/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"
   dependencies:
     pinkie-promise "^2.0.0"
     readable-stream "^2.0.0"
@@ -5553,6 +5574,13 @@ sax@^1.2.1, sax@~1.2.1:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
+scheduler@^0.19.1:
+  version "0.19.1"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.19.1.tgz#4f3e2ed2c1a7d65681f4c854fa8c5a1ccb40f196"
+  dependencies:
+    loose-envify "^1.1.0"
+    object-assign "^4.1.1"
+
 schema-utils@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-0.3.0.tgz#f5877222ce3e931edae039f17eb3716e7137f8cf"
@@ -5576,8 +5604,8 @@ semver-diff@^2.0.0:
     semver "^5.0.3"
 
 "semver@2 || 3 || 4 || 5", semver@^5.0.3, semver@^5.1.0, semver@^5.3.0:
-  version "5.4.1"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
+  version "5.7.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.2.tgz#48d55db737c3287cd4835e17fa13feace1c41ef8"
 
 send@0.16.1:
   version "0.16.1"