diff --git a/.circleci/config.yml b/.circleci/config.yml
index e7a4c54..d4e7db6 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,7 +11,7 @@ references:
 jobs:
   build:
     docker:
-      - image: cimg/python:2.7-node
+      - image: cimg/python:3.7-node
     working_directory: ~/repo
     steps:
       - checkout
@@ -19,12 +19,12 @@ jobs:
       - run:
           name: Install Serverless CLI and dependencies
           command: |
-            sudo npm i -g serverless        
+            sudo npm i -g serverless@2.71.0
             pip install -r requirements.txt -t .    
             
   deploy-staging:
     docker:
-      - image: cimg/python:2.7-node
+      - image: cimg/python:3.7-node
     working_directory: ~/repo
     steps:
       - checkout
@@ -32,7 +32,7 @@ jobs:
       - run:
           name: Install Serverless CLI and dependencies
           command: |
-            sudo npm i -g serverless            
+            sudo npm i -g serverless@2.71.0
             pip install -r requirements.txt -t .
       - run:
           name: Deploy application to staging
@@ -50,7 +50,7 @@ jobs:
 
   deploy-production:
     docker:
-      - image: cimg/python:2.7-node
+      - image: cimg/python:3.7-node
     working_directory: ~/repo
     steps:
       - checkout
@@ -58,7 +58,7 @@ jobs:
       - run:
           name: Install Serverless CLI and dependencies
           command: |
-            sudo npm i -g serverless            
+            sudo npm i -g serverless@2.71.0
             pip install -r requirements.txt -t .
 
       - run:
diff --git a/requirements.txt b/requirements.txt
index da0578a..9d2cfbe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-rook>=0.1.146
\ No newline at end of file
+rook>=0.1.209
\ No newline at end of file