diff --git a/deployment/ansible/group_vars/all b/deployment/ansible/group_vars/all
index d02981e02..da970f137 100644
--- a/deployment/ansible/group_vars/all
+++ b/deployment/ansible/group_vars/all
@@ -60,5 +60,6 @@ observation_api_url: "http://www.wikiwatershed-vs.org/"
 enabled_features: ''
 
 numba_version: "0.38.1"
+numpy_version: "1.14.5"
 
 redis_version: "2:2.8.4-2ubuntu0.2"
diff --git a/deployment/ansible/roles/model-my-watershed.app/tasks/dependencies.yml b/deployment/ansible/roles/model-my-watershed.app/tasks/dependencies.yml
index a2353a09f..3d6d90585 100644
--- a/deployment/ansible/roles/model-my-watershed.app/tasks/dependencies.yml
+++ b/deployment/ansible/roles/model-my-watershed.app/tasks/dependencies.yml
@@ -2,6 +2,9 @@
 - name: Install numba
   pip: name=numba version={{ numba_version }}
 
+- name: Install numpy
+  pip: name=numpy version={{ numpy_version }}
+
 - name: Install application Python dependencies for development and test
   pip: requirements="{{ app_home }}/requirements/{{ item }}.txt"
   with_items:
diff --git a/deployment/ansible/roles/model-my-watershed.celery-worker/tasks/dependencies.yml b/deployment/ansible/roles/model-my-watershed.celery-worker/tasks/dependencies.yml
index 443d9f032..4e1218289 100644
--- a/deployment/ansible/roles/model-my-watershed.celery-worker/tasks/dependencies.yml
+++ b/deployment/ansible/roles/model-my-watershed.celery-worker/tasks/dependencies.yml
@@ -2,6 +2,9 @@
 - name: Install numba
   pip: name=numba version={{ numba_version }}
 
+- name: Install numpy
+  pip: name=numpy version={{ numpy_version }}
+
 - name: Install application Python dependencies for development and test
   pip: requirements="{{ app_home }}/requirements/{{ item }}.txt"
   with_items: