diff --git a/builder/Dockerfile b/builder/Dockerfile
index a43c977..eea6343 100644
--- a/builder/Dockerfile
+++ b/builder/Dockerfile
@@ -1,7 +1,7 @@
 # https://github.com/ilianaw/rust-crowbar/issues/20
 # https://github.com/lambci/docker-lambda#documentation
 FROM lambci/lambda:build-python3.6
-RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain 1.27.0
+RUN curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain 1.27.2
 ADD build.sh /usr/local/bin/
 VOLUME ["/code"]
 WORKDIR /code
diff --git a/builder/Makefile b/builder/Makefile
index ed99c4f..1575399 100644
--- a/builder/Makefile
+++ b/builder/Makefile
@@ -1,5 +1,5 @@
 VERSION ?= 0.1.0
-RUST_VERSION ?= 1.27.0
+RUST_VERSION ?= 1.27.2
 REPO ?= softprops/lambda-rust
 TAG ?= "$(REPO):$(VERSION)-rust-$(RUST_VERSION)"