diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5bebbaf..50e1327 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,8 @@ $ docker run --rm \
 
 * Upgrade to Rust [`1.45.2`](https://blog.rust-lang.org/2020/08/03/Rust-1.45.2.html)
 
+* Upgrade to [amazon linux 2](https://aws.amazon.com/blogs/compute/migrating-aws-lambda-functions-to-al2/) base
+
 # 0.3.0-rust-1.45.0
 
 * Upgrade to Rust [`1.45.0`](https://blog.rust-lang.org/2020/07/16/Rust-1.45.0.html)
diff --git a/Dockerfile b/Dockerfile
index fb6495a..641eb8e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,6 @@
 # https://github.com/lambci/docker-lambda#documentation
-FROM lambci/lambda:build-provided
+FROM lambci/lambda:build-provided.al2
+
 ARG RUST_VERSION=1.45.2
 RUN yum install -y jq
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs \
diff --git a/Makefile b/Makefile
index 7cb3c43..7efdaaf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION ?= 0.3.0
+VERSION ?= 0.4.0
 RUST_VERSION ?= 1.45.2
 REPO ?= softprops/lambda-rust
 TAG ?= "$(REPO):$(VERSION)-rust-$(RUST_VERSION)"
diff --git a/README.md b/README.md
index a2c2dfe..bbf8016 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 
 ## 🤔 about
 
-This docker image extends [lambda ci `provided`](https://github.com/lambci/docker-lambda#documentation) builder docker image, a faithful reproduction of the actual AWS "**provided**" Lambda runtime environment,
+This docker image extends [lambda ci `provided.al2`](https://github.com/lambci/docker-lambda#documentation) builder docker image, a faithful reproduction of the actual AWS "**provided.al2**" Lambda runtime environment,
 and installs [rustup](https://rustup.rs/) and the *stable* rust toolchain.
 
 This provides a build environment, consistent with your target execution environment for predictable results.
@@ -99,7 +99,7 @@ You can take a look at an example [here](./tests/test-func-with-hooks).
 
 ## 🔬 local testing
 
-Once you've built a Rust lambda function artifact, the `provided` runtime expects
+Once you've built a Rust lambda function artifact, the `provided.al2` runtime expects
 deployments of that artifact to be named "**bootstrap**". The `lambda-rust` docker image
 builds a zip file, named after the binary, containing your binary file renamed to "bootstrap" for you, but zip file creation is unnecessary for local development.
 
@@ -108,7 +108,7 @@ output (not zipped) is available under `target/lambda/{profile}/output/{your-lam
 You will see both `bootstrap` and `bootstrap.debug` files there.
 > **⚠️ Note:** `PACKAGE=false` prevents `package` hook from running.
 
-You can then invoke this bootstap executable with the lambda-ci docker image for the `provided` AWS lambda runtime with a one off container.
+You can then invoke this bootstap executable with the lambda-ci docker image for the `provided.al2` AWS lambda runtime with a one off container.
 
 ```sh
 # Build your function skipping the zip creation step
@@ -122,13 +122,13 @@ docker run \
     -v ${HOME}/.cargo/git:/cargo/git \
     softprops/lambda-rust
 
-# start a one-off docker container replicating the "provided" lambda runtime
+# start a one-off docker container replicating the "provided.al2" lambda runtime
 # awaiting an event to be provided via stdin
 $ docker run \
     -i -e DOCKER_LAMBDA_USE_STDIN=1 \
     --rm \
     -v ${PWD}/target/lambda/release/output/{your-binary-name}:/var/task:ro,delegated \
-    lambci/lambda:provided
+    lambci/lambda:provided.al2
 
 # provide an event payload via stdin (typically a json blob)
 
@@ -148,7 +148,7 @@ $ unzip -o \
     -v /tmp/lambda:/var/task:ro,delegated \
     -e DOCKER_LAMBDA_STAY_OPEN=1 \
     -p 9001:9001 \
-    lambci/lambda:provided
+    lambci/lambda:provided.al2
 ```
 
 In a separate terminal, you can invoke your function with `curl`
diff --git a/tests/test.sh b/tests/test.sh
index 97bd88d..51c9f6f 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -86,7 +86,7 @@ for project in test-func test-multi-func test-func-with-hooks; do
 
     assert "it packages all bins" package_all "${bin_name}"
 
-    # verify packaged artifact by invoking it using the lambdaci "provided" docker image
+    # verify packaged artifact by invoking it using the lambdaci "provided.al2" docker image
     rm -f output.log > /dev/null 2>&1
     rm -f test-out.log > /dev/null 2>&1
     rm -rf /tmp/lambda > /dev/null 2>&1
@@ -97,7 +97,7 @@ for project in test-func test-multi-func test-func-with-hooks; do
         -i -e DOCKER_LAMBDA_USE_STDIN=1 \
         --rm \
         -v /tmp/lambda:/var/task \
-        lambci/lambda:provided < test-event.json | grep -v RequestId | grep -v '^\W*$' > test-out.log
+        lambci/lambda:provided.al2 < test-event.json | grep -v RequestId | grep -v '^\W*$' > test-out.log
 
     assert "when invoked, it produces expected output" diff expected-output.json test-out.log
 done