diff --git a/.circleci/config.yml b/.circleci/config.yml
index 44c236edd..2c8b7bbc5 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -113,7 +113,7 @@ jobs:
           name: Installing build dependencies
           command: |
             echo 'Installing build dependencies via APK'
-            apk add --no-cache -t openjdk8-jre graphviz ttf-droid ttf-droid-nonlatin
+            apk add --no-cache -t gitbook-build-dependencies openjdk8-jre graphviz ttf-droid ttf-droid-nonlatin
 
             echo 'Setting env vars'
             echo 'export PLANTUML_VERSION=$PLANTUML_VERSION' >> $BASH_ENV
diff --git a/book.json b/book.json
index c989d2403..82c606060 100644
--- a/book.json
+++ b/book.json
@@ -32,7 +32,7 @@
       "showByDefault": true
     },
     "uml": {
-      "format": "svg",
+      "format": "png",
       "nailgun": false
     }
   }
diff --git a/package-lock.json b/package-lock.json
index cbbfde235..a61792a2e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "documentation",
-  "version": "5.5.2",
+  "version": "5.5.3",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 34d9014fa..df1e4f42e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "documentation",
-  "version": "5.5.2",
+  "version": "5.5.3",
   "description": "Mojaloop Documentation GitBook Project",
   "dependencies": {
     "express": "4.16.4",