diff --git a/.travis.yml b/.travis.yml
index a6ef76f..96786c4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,9 +18,9 @@ matrix:
       addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.2,zsh], sources: [hvr-ghc]}}
     - env: CABALVER=2.0 GHCVER=8.2.2
       addons: {apt: {packages: [cabal-install-2.0,ghc-8.2.2,zsh], sources: [hvr-ghc]}}
-    - env: CABALVER=2.2 GHCVER=8.4.3
+    - env: CABALVER=2.2 GHCVER=8.4.4
       addons: {apt: {packages: [cabal-install-2.2,ghc-8.4.3,zsh], sources: [hvr-ghc]}}
-    - env: CABALVER=2.4 GHCVER=8.6.1
+    - env: CABALVER=2.4 GHCVER=8.6.3
       addons: {apt: {packages: [cabal-install-2.4,ghc-8.6.1,zsh], sources: [hvr-ghc]}}
     - os: osx
 
diff --git a/stack.yaml b/stack.yaml
index 433013f..d2510a2 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,3 +1,3 @@
-resolver: lts-12.24
+resolver: lts-13.2
 packages:
   - '.'