diff --git a/stack.yaml b/stack.yaml
index 1773a63..c3841fc 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-18.3
+resolver: lts-18.5
 # allow-newer: true
 packages:
 - '.'
diff --git a/stack.yaml.lock b/stack.yaml.lock
index 7c30116..acc6360 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -20,7 +20,7 @@ packages:
     hackage: yesod-newsfeed-1.7.0.0
 snapshots:
 - completed:
-    size: 585603
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/3.yaml
-    sha256: 694573e96dca34db5636edb1fe6c96bb233ca0f9fb96c1ead1671cdfa9bd73e9
-  original: lts-18.3
+    size: 585817
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/5.yaml
+    sha256: 22d24d0dacad9c1450b9a174c28d203f9bb482a2a8da9710a2f2a9f4afee2887
+  original: lts-18.5