diff --git a/.buildkite/pipeline.exec.sh b/.buildkite/pipeline.exec.sh
index 3b2324c..f19beb1 100755
--- a/.buildkite/pipeline.exec.sh
+++ b/.buildkite/pipeline.exec.sh
@@ -1,5 +1,10 @@
 #!/usr/bin/env bash
 
+set -o errexit
+set -o errtrace
+set -o nounset
+set -o pipefail
+
 git config --global user.email "team@getnelson.io"
 git config --global user.name "Nelson Team"
 
@@ -7,12 +12,12 @@ git config --global user.name "Nelson Team"
 export TRAVIS="true" # way hacky
 export TRAVIS_COMMIT="$BUILDKITE_COMMIT"
 export TRAVIS_REPO_SLUG="getnelson/knobs"
-export TRAVIS_JOB_NUMBER="1.1"
 export TRAVIS_BUILD_NUMBER="$BUILDKITE_BUILD_NUMBER"
 export KNOBS_TEST_DIR="knobs-test"
 
-if [ "$BUILDKITE_PULL_REQUEST" = 'false' ]; then
+if [ "${BUILDKITE_PULL_REQUEST:-}" = 'false' ]; then
 	git checkout -qf "$BUILDKITE_BRANCH";
 fi
 
-sbt ++2.11.11 'release with-defaults'
+echo "--> running build for ${TRAVIS_SCALA_VERSION}..."
+eval "sbt ++${TRAVIS_SCALA_VERSION} 'release with-defaults'"
diff --git a/.buildkite/pipeline.teardown.sh b/.buildkite/pipeline.teardown.sh
index 1ec4958..9ec7e43 100755
--- a/.buildkite/pipeline.teardown.sh
+++ b/.buildkite/pipeline.teardown.sh
@@ -4,4 +4,4 @@ echo "==>> initilizing doctl..."
 doctl auth init -t "${DIGITAL_OCEAN_API_TOKEN}"
 
 echo "==>> deleting the droplet..."
-doctl compute droplet delete -f buildkite-worker
+doctl compute droplet list | grep -v 'ID' | sort -r -k1 | grep "buildkite-worker" | awk '{print $1}' | xargs -L1 doctl compute droplet delete -f
diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index af36b43..26837b4 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -2,12 +2,23 @@
 steps:
   - label: ":hammer: build"
     command: .buildkite/pipeline.exec.sh
-    concurrency: 1
-    concurrency_group: primary
     timeout_in_minutes: 45
     branches: master
     env:
-      - BUILDKITE_CLEAN_CHECKOUT: true
+      BUILDKITE_CLEAN_CHECKOUT: true
+      TRAVIS_SCALA_VERSION: "2.11.12"
+      TRAVIS_JOB_NUMBER: "1.1"
+    agents:
+      os: linux
+
+  - label: ":hammer: build"
+    command: .buildkite/pipeline.exec.sh
+    timeout_in_minutes: 45
+    branches: master
+    env:
+      BUILDKITE_CLEAN_CHECKOUT: true
+      TRAVIS_SCALA_VERSION: "2.12.4"
+      TRAVIS_JOB_NUMBER: "1.2"
     agents:
       os: linux
 
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 1ecdc9f..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,48 +0,0 @@
-language: scala
-
-matrix:
-  include:
-    # scala 2.11
-    - jdk: oraclejdk8
-      scala: 2.11.12
-    # scala 2.12
-    - jdk: oraclejdk8
-      scala: 2.12.4
-
-branches:
-  only:
-  - master
-
-before_script:
-  - "if [ $TRAVIS_PULL_REQUEST = 'false' ]; then git checkout -qf $TRAVIS_BRANCH; fi"
-
-script:
-  - |
-    if [ $TRAVIS_PULL_REQUEST = 'false' ]; then
-      if [ $RELEASE_ON_PUSH = 'false' ]; then
-        sbt ++$TRAVIS_SCALA_VERSION test coverageReport
-      else
-        sbt ++$TRAVIS_SCALA_VERSION 'release with-defaults'
-      fi
-    else
-      sbt ++$TRAVIS_SCALA_VERSION test coverageReport
-    fi
-  - find $HOME/.sbt -name "*.lock" | xargs rm
-  - find $HOME/.ivy2 -name "ivydata-*.properties" | xargs rm
-
-cache:
-  directories:
-    - $HOME/.ivy2/cache
-    - $HOME/.sbt/boot/scala-$TRAVIS_SCALA_VERSION
-
-after_success:
-  - find $HOME/.sbt -name "*.lock" | xargs rm
-  - find $HOME/.ivy2 -name "ivydata-*.properties" | xargs rm
-  - "bash <(curl -s https://codecov.io/bash) -r $TRAVIS_REPO_SLUG -t $CODECOV_TOKEN"
-
-env:
-  global:
-    - secure: "emCycBlDj0nwdK/SI4q/38WGlZS1tvttZbgzb38KegPUIOv6hr78L73t/2pb8FT/AHPdhYF4q6q8AXxAJi3QoiznMSAT1xyxZZ+wWrWqPuphhkqMSEdzcG8fbi3YGkB0sl+7ZLsveUg/JmG6j6NFjzWjRjb6Rn9MUWKGWDs5a8g="
-    - secure: "RKDMtxH135S+urp/t92qAwe1L0oGDuheKSXBcjwU55v2OS1NX4GPzE64y9hCuYK43BkXB1Xv/mMnF55TYSjHHpnP4BUXW0/SIERrwM+JFQ1TiukocMNiRUZ0jzZ6sUl7wpwhDntXR//jb/6+gCxC7hdlYUQgQ6qjCQffBZT0RzY="
-    - secure: "lqLNd52nASivxq6IFYsq7UIBbH2eHVcvqSbOGFkzDsWscBoeWl5BvM1uOGFRoU3kJB3L23tK3Dq8rfIMXUh6ghPQpMlLKNtQ1XiTIm0s5MqY4JqmRbSLb6eexof/sUE6CgtwTlYp6LTQzT0NLdlBsvyySq5EkfJqeMVH0K7uu5Y="
-    - KNOBS_TEST_DIR="knobs-test"