diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..748b705
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,14 @@
+language: bash
+
+# only build pushes to master
+# prs are build separately
+# https://docs.travis-ci.com/user/pull-requests/#how-pull-requests-are-built
+branches:
+  only:
+  - master
+
+services:
+  - docker
+
+script:
+  make build
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 10e47cb..f4fb9f6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
+#  0.2.0-rust-1.32.0 (unreleased)
+
+* Upgrade to Rust [`1.32.0`](https://blog.rust-lang.org/2019/01/17/Rust-1.32.0.html)
+
 # 0.2.0-rust-1.31.1
 
-* Upgrade to Rust `1.13.1`
+* Upgrade to Rust [`1.13.1`](https://blog.rust-lang.org/2018/12/20/Rust-1.31.1.html)
 
 # 0.2.0-rust-1.31.0
 
diff --git a/Dockerfile b/Dockerfile
index d8c8c67..f788df0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-# https://github.com/ilianaw/rust-crowbar/issues/20
 # https://github.com/lambci/docker-lambda#documentation
 FROM lambci/lambda:build-provided
-RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain 1.31.1
+ARG RUST_VERSION
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain $RUST_VERSION
 ADD build.sh /usr/local/bin/
 VOLUME ["/code"]
 WORKDIR /code
diff --git a/Makefile b/Makefile
index 005324c..bc0923a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 VERSION ?= 0.2.0
-RUST_VERSION ?= 1.31.1
+RUST_VERSION ?= 1.32.0
 REPO ?= softprops/lambda-rust
 TAG ?= "$(REPO):$(VERSION)-rust-$(RUST_VERSION)"
 
@@ -8,5 +8,5 @@ publish: build
 	docker push $(REPO):latest
 
 build:
-	docker build -t $(TAG) .
+	docker build --build-arg RUST_VERSION=$(RUST_VERSION) -t $(TAG) .
 	docker tag $(TAG) $(REPO):latest
\ No newline at end of file