diff --git a/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml b/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml
index 9383fb54c161f..b5ff1baee358f 100644
--- a/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml
+++ b/ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml
@@ -330,7 +330,6 @@ objects:
         platform:
           aws:
             region:       ${AWS_REGION}
-            vpcCIDRBlock: 10.0.0.0/16
             userTags:
               expirationDate: ${EXPIRATION_DATE}
         pullSecret: |
@@ -358,7 +357,6 @@ objects:
           type:        OpenshiftSDN
         platform:
           openstack:
-            NetworkCIDRBlock: 10.0.0.0/16
             baseImage:        ${OPENSTACK_IMAGE}
             cloud:            ${OS_CLOUD}
             externalNetwork:  ${OPENSTACK_EXTERNAL_NETWORK}
diff --git a/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml b/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml
index ac694a8d36bc5..edb4eb6c9e9d8 100644
--- a/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml
+++ b/ci-operator/templates/openshift/installer/cluster-launch-installer-src.yaml
@@ -295,7 +295,6 @@ objects:
         platform:
           aws:
             region:       ${AWS_REGION}
-            vpcCIDRBlock: 10.0.0.0/16
             userTags:
               expirationDate: ${EXPIRATION_DATE}
         pullSecret: |
@@ -323,7 +322,6 @@ objects:
           type:        OpenshiftSDN
         platform:
           openstack:
-            NetworkCIDRBlock: 10.0.0.0/16
             baseImage:        ${OPENSTACK_IMAGE}
             cloud:            ${OS_CLOUD}
             externalNetwork:  ${OPENSTACK_EXTERNAL_NETWORK}
diff --git a/ci-operator/templates/openshift/openshift-ansible/cluster-launch-e2e-40.yaml b/ci-operator/templates/openshift/openshift-ansible/cluster-launch-e2e-40.yaml
index cf7700f946c58..8afd5173c9295 100644
--- a/ci-operator/templates/openshift/openshift-ansible/cluster-launch-e2e-40.yaml
+++ b/ci-operator/templates/openshift/openshift-ansible/cluster-launch-e2e-40.yaml
@@ -314,7 +314,6 @@ objects:
         platform:
           aws:
             region:       us-east-1
-            vpcCIDRBlock: 10.0.0.0/16
             userTags:
               expirationDate: ${EXPIRATION_DATE}
         pullSecret: |