diff --git a/Dockerfile b/Dockerfile
index 6382e4b..f0f0b8a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM haskell:8.6.3 as builder
+FROM haskell:8.6.5 as builder
 WORKDIR /opt/hastatic
 ADD . .
 RUN stack install && strip /root/.local/bin/hastatic
diff --git a/stack.yaml b/stack.yaml
index 8dcebf5..28b9c1d 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-13.2
+resolver: lts-13.26
 
 packages:
 - .