diff --git a/app/embeds/components/Frame.js b/app/embeds/components/Frame.js
index 1b0e3387a..26b579783 100644
--- a/app/embeds/components/Frame.js
+++ b/app/embeds/components/Frame.js
@@ -39,7 +39,7 @@ class Frame extends React.Component<Props> {
       forwardedRef,
       ...rest
     } = this.props;
-    const Component = border ? Iframe : 'iframe';
+    const Component = border ? StyledIframe : 'iframe';
 
     return (
       <Rounded width={width} height={height}>
@@ -52,6 +52,7 @@ class Frame extends React.Component<Props> {
             type="text/html"
             frameBorder="0"
             title="embed"
+            loading="lazy"
             allowFullScreen
             {...rest}
           />
@@ -68,7 +69,11 @@ const Rounded = styled.div`
   height: ${props => props.height};
 `;
 
-const Iframe = styled.iframe`
+// This wrapper allows us to pass non-standard HTML attributes through to the DOM element
+// https://www.styled-components.com/docs/basics#passed-props
+const Iframe = props => <iframe {...props} />;
+
+const StyledIframe = styled(Iframe)`
   border: 1px solid;
   border-color: ${props => props.theme.embedBorder};
   border-radius: 3px;
diff --git a/package.json b/package.json
index 33645a296..e0f795b51 100644
--- a/package.json
+++ b/package.json
@@ -129,9 +129,9 @@
     "query-string": "^4.3.4",
     "randomstring": "1.1.5",
     "raw-loader": "^0.5.1",
-    "react": "^16.6.0",
+    "react": "^16.8.6",
     "react-avatar-editor": "^10.3.0",
-    "react-dom": "^16.6.0",
+    "react-dom": "^16.8.6",
     "react-dropzone": "4.2.1",
     "react-helmet": "^5.2.0",
     "react-keydown": "^1.7.3",
@@ -142,7 +142,7 @@
     "react-waypoint": "^7.3.1",
     "redis": "^2.6.2",
     "redis-lock": "^0.1.0",
-    "rich-markdown-editor": "^9.1.2",
+    "rich-markdown-editor": "^9.2.1-0",
     "safestart": "1.1.0",
     "sequelize": "4.28.6",
     "sequelize-cli": "^5.4.0",
@@ -150,7 +150,7 @@
     "slug": "^1.0.0",
     "string-replace-to-array": "^1.0.3",
     "style-loader": "^0.18.2",
-    "styled-components": "^4.1.3",
+    "styled-components": "^4.2.0",
     "styled-components-breakpoint": "^2.1.1",
     "styled-components-grid": "^2.2.1",
     "styled-normalize": "^8.0.4",
diff --git a/yarn.lock b/yarn.lock
index cf92919b6..e9eb45b02 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5693,6 +5693,10 @@ memoize-one@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/memoize-one/-/memoize-one-4.1.0.tgz#a2387c58c03fff27ca390c31b764a79addf3f906"
 
+memoize-one@^5.0.0:
+  version "5.0.4"
+  resolved "https://registry.yarnpkg.com/memoize-one/-/memoize-one-5.0.4.tgz#005928aced5c43d890a4dfab18ca908b0ec92cbc"
+
 memoizee@^0.4.14:
   version "0.4.14"
   resolved "https://registry.yarnpkg.com/memoizee/-/memoizee-0.4.14.tgz#07a00f204699f9a95c2d9e77218271c7cd610d57"
@@ -6974,9 +6978,9 @@ pretty-format@^22.4.0, pretty-format@^22.4.3:
     ansi-regex "^3.0.0"
     ansi-styles "^3.2.0"
 
-prismjs@^1.15.0:
-  version "1.15.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.15.0.tgz#8801d332e472091ba8def94976c8877ad60398d9"
+prismjs@^1.16.0:
+  version "1.16.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.16.0.tgz#406eb2c8aacb0f5f0f1167930cb83835d10a4308"
   optionalDependencies:
     clipboard "^2.0.0"
 
@@ -7210,14 +7214,14 @@ react-deep-force-update@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/react-deep-force-update/-/react-deep-force-update-1.1.2.tgz#3d2ae45c2c9040cbb1772be52f8ea1ade6ca2ee1"
 
-react-dom@^16.6.0:
-  version "16.8.3"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.8.3.tgz#ae236029e66210783ac81999d3015dfc475b9c32"
+react-dom@^16.8.6:
+  version "16.8.6"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.8.6.tgz#71d6303f631e8b0097f56165ef608f051ff6e10f"
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.2"
-    scheduler "^0.13.3"
+    scheduler "^0.13.6"
 
 react-dropzone@4.2.1:
   version "4.2.1"
@@ -7338,14 +7342,14 @@ react-waypoint@^7.3.1:
     consolidated-events "^1.1.0"
     prop-types "^15.0.0"
 
-react@^16.6.0:
-  version "16.8.3"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.8.3.tgz#c6f988a2ce895375de216edcfaedd6b9a76451d9"
+react@^16.8.6:
+  version "16.8.6"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.8.6.tgz#ad6c3a9614fd3a4e9ef51117f54d888da01f2bbe"
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.2"
-    scheduler "^0.13.3"
+    scheduler "^0.13.6"
 
 read-pkg-up@^1.0.1:
   version "1.0.1"
@@ -7735,10 +7739,9 @@ retry-axios@0.3.2, retry-axios@^0.3.2:
   version "0.3.2"
   resolved "https://registry.yarnpkg.com/retry-axios/-/retry-axios-0.3.2.tgz#5757c80f585b4cc4c4986aa2ffd47a60c6d35e13"
 
-rich-markdown-editor@^9.1.2:
-  version "9.1.2"
-  resolved "https://registry.yarnpkg.com/rich-markdown-editor/-/rich-markdown-editor-9.1.2.tgz#869d2a66d93b84ae6878ad3917dd3a012cffb721"
-  integrity sha512-Sv9svBpH+rVktpNjD/73IpVTVE3atKVLt+Kdcx+o/DRkvJPdXwJkMYXM2jE8IIBRafgdGS/X6JZImVlsX5uHxQ==
+rich-markdown-editor@^9.2.1-0:
+  version "9.2.1-0"
+  resolved "https://registry.yarnpkg.com/rich-markdown-editor/-/rich-markdown-editor-9.2.1-0.tgz#98417a65f1b3d4cdd5781414f4d9fba97b336443"
   dependencies:
     "@tommoor/slate-edit-list" "0.19.0-0"
     "@wikifactory/slate-edit-blockquote" "^0.7.1"
@@ -7751,25 +7754,22 @@ rich-markdown-editor@^9.1.2:
     eslint-plugin-flowtype "^2.46.1"
     eslint-plugin-prettier "^2.6.0"
     golery-slate-prism "0.6.0-golery.2"
-    immutable "^3.8.2"
     lodash "^4.17.11"
     outline-icons "^1.6.0"
-    prismjs "^1.15.0"
-    react "^16.6.0"
+    prismjs "^1.16.0"
     react-autosize-textarea "^6.0.0"
-    react-dom "^16.6.0"
     react-keydown "^1.9.7"
     react-medium-image-zoom "^3.0.10"
     react-portal "^4.1.4"
-    slate "^0.44.10"
+    slate "^0.45.0"
     slate-collapse-on-escape "^0.8.1"
     slate-drop-or-paste-images "^0.9.1"
     slate-md-serializer "^5.3.1"
     slate-paste-linkify "^0.7.0"
-    slate-react "^0.21.15"
+    slate-react "^0.21.20"
     slate-schema-violations "^0.1.39"
     slugify "^1.3.0"
-    styled-components "^4.1.3"
+    styled-components "^4.2.0"
 
 right-align@^0.1.1:
   version "0.1.3"
@@ -7878,9 +7878,9 @@ sax@>=0.6.0, sax@^1.2.4, sax@~1.2.1:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
-scheduler@^0.13.3:
-  version "0.13.3"
-  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.13.3.tgz#bed3c5850f62ea9c716a4d781f9daeb9b2a58896"
+scheduler@^0.13.6:
+  version "0.13.6"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.13.6.tgz#466a4ec332467b31a91b9bf74e5347072e4cd889"
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
@@ -8049,9 +8049,9 @@ slash@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/slash/-/slash-1.0.0.tgz#c41f2f6c39fc16d1cd17ad4b5d896114ae470d55"
 
-slate-base64-serializer@^0.2.95:
-  version "0.2.95"
-  resolved "https://registry.yarnpkg.com/slate-base64-serializer/-/slate-base64-serializer-0.2.95.tgz#018ccf749f0f0f62fc2d5f4722fd770d359cf76b"
+slate-base64-serializer@^0.2.99:
+  version "0.2.99"
+  resolved "https://registry.yarnpkg.com/slate-base64-serializer/-/slate-base64-serializer-0.2.99.tgz#22f7208850ceb4f5fee0d5f2a4c1442c13082150"
   dependencies:
     isomorphic-base64 "^1.0.2"
 
@@ -8061,9 +8061,9 @@ slate-collapse-on-escape@^0.8.1:
   dependencies:
     to-pascal-case "^1.0.0"
 
-slate-dev-environment@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/slate-dev-environment/-/slate-dev-environment-0.2.1.tgz#760f500f18af0dc61bcae39eec4160c420fea537"
+slate-dev-environment@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/slate-dev-environment/-/slate-dev-environment-0.2.2.tgz#bd8946e1fe4cf5447060c84a362a1d026ed8b77f"
   dependencies:
     is-in-browser "^1.1.3"
 
@@ -8082,12 +8082,12 @@ slate-drop-or-paste-images@^0.9.1:
     is-url "^1.2.2"
     slate-dev-logger "^0.1.0"
 
-slate-hotkeys@^0.2.8:
-  version "0.2.8"
-  resolved "https://registry.yarnpkg.com/slate-hotkeys/-/slate-hotkeys-0.2.8.tgz#7fecf732c512c860113f3f1a6dc1015df9d130a7"
+slate-hotkeys@^0.2.9:
+  version "0.2.9"
+  resolved "https://registry.yarnpkg.com/slate-hotkeys/-/slate-hotkeys-0.2.9.tgz#0cc9eb750a49ab9ef11601305b7c82b5402348e3"
   dependencies:
     is-hotkey "0.1.4"
-    slate-dev-environment "^0.2.1"
+    slate-dev-environment "^0.2.2"
 
 slate-md-serializer@^5.3.1:
   version "5.3.1"
@@ -8101,21 +8101,21 @@ slate-paste-linkify@^0.7.0:
   dependencies:
     is-url "^1.2.2"
 
-slate-plain-serializer@^0.6.34:
-  version "0.6.34"
-  resolved "https://registry.yarnpkg.com/slate-plain-serializer/-/slate-plain-serializer-0.6.34.tgz#8775edc1190d5fe3c7196eb0ad665607d0547a87"
+slate-plain-serializer@^0.6.38:
+  version "0.6.38"
+  resolved "https://registry.yarnpkg.com/slate-plain-serializer/-/slate-plain-serializer-0.6.38.tgz#d4d8840ee6229f75941982fcd3df1345b67f44ec"
 
-slate-prop-types@^0.5.25:
-  version "0.5.25"
-  resolved "https://registry.yarnpkg.com/slate-prop-types/-/slate-prop-types-0.5.25.tgz#bbee28fec3eacb51209bc48eea1962374b8a44b5"
+slate-prop-types@^0.5.29:
+  version "0.5.29"
+  resolved "https://registry.yarnpkg.com/slate-prop-types/-/slate-prop-types-0.5.29.tgz#1a976ce51c6ab750f35b22b84697eb16423b9482"
 
-slate-react-placeholder@^0.1.13:
-  version "0.1.13"
-  resolved "https://registry.yarnpkg.com/slate-react-placeholder/-/slate-react-placeholder-0.1.13.tgz#2e442d88b189bff203bdac454a05ce2637a19000"
+slate-react-placeholder@^0.1.17:
+  version "0.1.17"
+  resolved "https://registry.yarnpkg.com/slate-react-placeholder/-/slate-react-placeholder-0.1.17.tgz#e09ac09c2f3f855f1652426c33ce0bf623da1a3e"
 
-slate-react@^0.21.15:
-  version "0.21.16"
-  resolved "https://registry.yarnpkg.com/slate-react/-/slate-react-0.21.16.tgz#fa13b2228ffa6f4d9325bb61995d0231a62ff7b5"
+slate-react@^0.21.20:
+  version "0.21.20"
+  resolved "https://registry.yarnpkg.com/slate-react/-/slate-react-0.21.20.tgz#b953bc26db2b13f1791976ffae64a1d7e662cf3f"
   dependencies:
     debug "^3.1.0"
     get-window "^1.1.1"
@@ -8125,12 +8125,12 @@ slate-react@^0.21.15:
     prop-types "^15.5.8"
     react-immutable-proptypes "^2.1.0"
     selection-is-backward "^1.0.0"
-    slate-base64-serializer "^0.2.95"
-    slate-dev-environment "^0.2.1"
-    slate-hotkeys "^0.2.8"
-    slate-plain-serializer "^0.6.34"
-    slate-prop-types "^0.5.25"
-    slate-react-placeholder "^0.1.13"
+    slate-base64-serializer "^0.2.99"
+    slate-dev-environment "^0.2.2"
+    slate-hotkeys "^0.2.9"
+    slate-plain-serializer "^0.6.38"
+    slate-prop-types "^0.5.29"
+    slate-react-placeholder "^0.1.17"
     tiny-invariant "^1.0.1"
     tiny-warning "^0.0.3"
 
@@ -8138,9 +8138,9 @@ slate-schema-violations@^0.1.39:
   version "0.1.39"
   resolved "https://registry.yarnpkg.com/slate-schema-violations/-/slate-schema-violations-0.1.39.tgz#854ab5624136419cef4c803b1823acabe11f1c15"
 
-slate@^0.44.10:
-  version "0.44.10"
-  resolved "https://registry.yarnpkg.com/slate/-/slate-0.44.10.tgz#ac7c3e3cf85570a8723a64a8a7807c881ddbfa8a"
+slate@^0.45.0:
+  version "0.45.0"
+  resolved "https://registry.yarnpkg.com/slate/-/slate-0.45.0.tgz#2fec8151c2d311ff475cb1ff655c76827b2bf0e0"
   dependencies:
     debug "^3.1.0"
     direction "^0.1.5"
@@ -8516,16 +8516,16 @@ styled-components-grid@^2.2.1:
     react-create-component-from-tag-prop "^1.4.0"
     styled-components-breakpoint "^2.0.2"
 
-styled-components@^4.1.3:
-  version "4.1.3"
-  resolved "https://registry.yarnpkg.com/styled-components/-/styled-components-4.1.3.tgz#4472447208e618b57e84deaaeb6acd34a5e0fe9b"
+styled-components@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/styled-components/-/styled-components-4.2.0.tgz#811fbbec4d64c7189f6c7482b9eb6fefa7fefef7"
   dependencies:
     "@babel/helper-module-imports" "^7.0.0"
     "@emotion/is-prop-valid" "^0.7.3"
     "@emotion/unitless" "^0.7.0"
     babel-plugin-styled-components ">= 1"
     css-to-react-native "^2.2.2"
-    memoize-one "^4.0.0"
+    memoize-one "^5.0.0"
     prop-types "^15.5.4"
     react-is "^16.6.0"
     stylis "^3.5.0"