diff --git a/Jenkinsfile b/Jenkinsfile
index 9e9c13968f..df8f526f6c 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -17,7 +17,7 @@ def creds = [
 pipeline {
   agent {
     docker {
-      image 'quay.io/coreos/tectonic-builder:v1.11'
+      image 'quay.io/coreos/tectonic-builder:v1.12'
       label 'worker'
     }
   }
diff --git a/images/tectonic-builder/Dockerfile b/images/tectonic-builder/Dockerfile
index 731095e109..abc8930d76 100644
--- a/images/tectonic-builder/Dockerfile
+++ b/images/tectonic-builder/Dockerfile
@@ -30,7 +30,7 @@ RUN chmod 777 -R ${HOME}
 
 RUN apt-get update \
     && apt-get install --no-install-recommends -y -q \
-    build-essential sudo curl wget git autoconf automake unzip libtool jq shellcheck
+    build-essential sudo curl wget git autoconf automake unzip libtool jq shellcheck awscli
 
 # install terraform
 RUN curl https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip | funzip > /usr/local/bin/terraform && chmod +x /usr/local/bin/terraform
diff --git a/release.groovy b/release.groovy
index 4689ebd263..c8d2822bcd 100644
--- a/release.groovy
+++ b/release.groovy
@@ -25,7 +25,7 @@ pipeline {
             containers: [
               containerTemplate(
                 name: 'webapp-agent',
-                image: 'quay.io/coreos/tectonic-builder:v1.11',
+                image: 'quay.io/coreos/tectonic-builder:v1.12',
                 ttyEnabled: true,
                 command: 'cat',
               )