diff --git a/preproduction-azure-pipelines.yml b/preproduction-azure-pipelines.yml
index 82ffc9509a5e..122c66f7376d 100644
--- a/preproduction-azure-pipelines.yml
+++ b/preproduction-azure-pipelines.yml
@@ -30,7 +30,7 @@ jobs:
     displayName: 'npm install'
     inputs:
       verbose: false
-  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.13'
+  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.21 @azure/oad@0.6.3'
   - script: 'npm test -- test/syntax.js'
     displayName: 'Syntax validation'
 
@@ -42,7 +42,7 @@ jobs:
     displayName: 'npm install'
     inputs:
       verbose: false
-  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.13'
+  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.21 @azure/oad@0.6.3'
   - script: 'npm run tsc && node scripts/semanticValidation.js'
     displayName: 'Semantic Validation'
 
@@ -54,7 +54,7 @@ jobs:
     displayName: 'npm install'
     inputs:
       verbose: false
-  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.13'
+  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.21 @azure/oad@0.6.3'
   - script: 'npm run tsc && node scripts/modelValidation.js'
     displayName: 'Model Validation'
 
@@ -75,12 +75,12 @@ jobs:
     vmImage: 'Ubuntu 16.04'
   steps:
   - script: 'scripts/install-dotnet.sh'
-    displayName: 'Insall .Net'
+    displayName: 'Install .Net'
   - task: Npm@1
     displayName: 'npm install'
     inputs:
       verbose: false
-  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.13'
+  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.21 @azure/oad@0.6.3'
   - script: 'npm run tsc && node scripts/breaking-change.js'
     displayName: 'Breaking Changes'
 
@@ -96,7 +96,7 @@ jobs:
       verbose: false
   - script: 'scripts/install-dotnet.sh'
     displayName: 'install .Net'
-  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.13'
+  - script: 'npm install -D @azure/rest-api-specs-scripts@0.2.21 @azure/oad@0.6.3'
   - script: 'npm run tsc && node scripts/momentOfTruth.js && node scripts/momentOfTruthPostProcessing.js'
     displayName: 'LintDiff'