diff --git a/Dockerfile b/Dockerfile
index 0edbc62c..2c527352 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM ubuntu:18.04
 
 ARG STACK_VERSION=2.1.3
-ARG RESOLVER=lts-14.23
+ARG RESOLVER=lts-14.27
 
 # Install all necessary Ubuntu packages
 RUN apt-get update && apt-get install -y python3-pip libgmp-dev libmagic-dev libtinfo-dev libzmq3-dev libcairo2-dev libpango1.0-dev libblas-dev liblapack-dev gcc g++ wget && \
diff --git a/README.md b/README.md
index ab03643f..56bac050 100644
--- a/README.md
+++ b/README.md
@@ -145,7 +145,7 @@ a `stack.yaml` file.
 A simple version would be:
 
 ```yaml
-resolver: lts-14.23
+resolver: lts-14.27
 packages: []
 ```
 
diff --git a/stack.yaml b/stack.yaml
index 48b2178d..715517b0 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-14.23
+resolver: lts-14.27
 
 flags: {}
 packages: