diff --git a/.netlify/build-deploy-preview.sh b/.netlify/build-deploy-preview.sh
index b1e1ffc06..5b8e2a31b 100644
--- a/.netlify/build-deploy-preview.sh
+++ b/.netlify/build-deploy-preview.sh
@@ -7,6 +7,7 @@ cd "$(dirname "$0")"
 # Helpful to verify which versions we're using
 yarn -v
 node -v
+yarn config set workspaces-experimental true
 
 # Install GitBook CLI
 echo 'Installing Gitbook CLI'
@@ -60,7 +61,7 @@ mkdir ./docs/latest/_book/demo/
 
 # Install build deps and all monorepo package dependencies. Yarn Workspaces
 # should also symlink all projects appropriately
-yarn install
+yarn install --no-ignore-optional --pure-lockfile
 
 # Navigate to our Viewer project
 cd ./platform/viewer/
diff --git a/netlify.toml b/netlify.toml
index c2d0d2ea0..4ba777999 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -33,7 +33,7 @@
 [context.deploy-preview]
   base = ""
   publish = "docs/latest/_book/"
-  command = ".netlify/build-deploy-preview.sh"
+  command = "chmod +x .netlify/build-deploy-preview.sh && .netlify/build-deploy-preview.sh"
 
 # Redirects and headers are GLOBAL for all builds – they do not get scoped to
 # contexts no matter where you define them in the file.