diff --git a/.travis.yml b/.travis.yml
index 8241a63..af3946a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,20 +11,46 @@ cache:
 # cache file per set of arguments.
 matrix:
   include:
-  - env: ARGS="--resolver lts-6"
+  - env:
+    - ARGS="--resolver lts-6"
+    - HAPPY="-1.19.6"
     compiler: ": #stack 7.10.3"
     addons: { apt: { packages: [libgmp-dev] } }
 
-  - env: ARGS="--resolver lts-7"
+  - env:
+    - ARGS="--resolver lts-7"
+    - HAPPY="-1.19.6"
     compiler: ": #stack 8.0.1"
     addons: { apt: { packages: [libgmp-dev] } }
 
-  - env: ARGS="--resolver lts-8"
+  - env:
+    - ARGS="--resolver lts-8"
+    - HAPPY="-1.19.6"
     compiler: ": #stack 8.0.2"
     addons: { apt: { packages: [libgmp-dev] } }
 
-  - env: ARGS="--resolver nightly-2017-07-31"
-    compiler: ": #stack 8.2.1"
+  - env: ARGS="--resolver lts-11.22"
+    compiler: ": #stack 8.2.2"
+    addons: { apt: { packages: [libgmp-dev] } }
+
+  - env: ARGS="--resolver lts-12.14"
+    compiler: ": #stack 8.4.3"
+    addons: { apt: { packages: [libgmp-dev] } }
+
+  - env: ARGS="--resolver lts-12.26"
+    compiler: ": #stack 8.4.4"
+    addons: { apt: { packages: [libgmp-dev] } }
+
+  - env: ARGS="--resolver lts-13.11"
+    compiler: ": #stack 8.6.3"
+    addons: { apt: { packages: [libgmp-dev] } }
+
+  - env: ARGS="--resolver lts-13.19"
+    compiler: ": #stack 8.6.4"
+    addons: { apt: { packages: [libgmp-dev] } }
+
+  - env: ARGS="--resolver lts-14.20"
+    compiler: ": #stack 8.6.5"
     addons: { apt: { packages: [libgmp-dev] } }
 
   - env: ARGS="--resolver nightly"
@@ -45,7 +71,7 @@ before_install:
 - travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
 
 install:
-- stack --no-terminal --install-ghc $ARGS build happy
+- stack --no-terminal --install-ghc $ARGS install happy$HAPPY
 - stack --no-terminal $ARGS test --bench --only-dependencies
 
 script:
diff --git a/package.yaml b/package.yaml
index 69e1786..faacf95 100644
--- a/package.yaml
+++ b/package.yaml
@@ -48,7 +48,7 @@ library:
   - th-orphans
   - monad-control >= 1.0.0.0 && < 2
   - mtl
-  - template-haskell >= 2.10.0.0 && < 2.13
+  - template-haskell >= 2.10.0.0 && < 2.16
   - transformers-base
   when:
   - condition: impl(ghc < 8)
diff --git a/stack.yaml b/stack.yaml
index 040e76d..30fee67 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-8.20
+resolver: lts-14.20
 
 packages:
 - '.'