diff --git a/docs/usage/sections.md b/docs/usage/sections.md
index f0046692d6..44d409f5f6 100644
--- a/docs/usage/sections.md
+++ b/docs/usage/sections.md
@@ -1,2 +1,7 @@
 # Sections
 
+> Every document is made up of one or more sections
+
+A section is a grouping of paragraphs that have a specific set of properties used to define the pages on which the text will appear. Properties include page size, page numbers, page orientation, headers, borders and margins.
+
+For example, you could have one section which is portrait with a header and footer, and another section in landscape with no footer, and a header showing the current page number.
diff --git a/package.json b/package.json
index 965a8b51e9..77750352d4 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "@types/webpack": "^4.4.24",
     "awesome-typescript-loader": "^3.4.1",
     "chai": "^3.5.0",
-    "docsify": "^4.9.1",
+    "docsify-cli": "^4.3.0",
     "glob": "^7.1.2",
     "istanbul-instrumenter-loader": "^3.0.1",
     "jszip": "^3.1.5",