diff --git a/.haskell-ci b/.haskell-ci
index e0ccd0d..bb9bd3f 100644
--- a/.haskell-ci
+++ b/.haskell-ci
@@ -1,7 +1,7 @@
 # compiler supported and their equivalent LTS
 compiler: ghc-8.0 lts-9.21
 compiler: ghc-8.2 lts-11.22
-compiler: ghc-8.4 lts-12.14
+compiler: ghc-8.4 lts-12.15
 compiler: ghc-8.6 nightly-2018-10-21
 
 # options
diff --git a/.travis.yml b/.travis.yml
index 6b45760..e542406 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-# ~*~ auto-generated by haskell-ci with config : 7cb8db1c90854ae440aca1b3cde96895bf9153ceeddfe5fd39d82f8e300414c6 ~*~
+# ~*~ auto-generated by haskell-ci with config : c5de1915986b17c62e2a4cbe1fb7b3d47a6b1dc45a8f4d4fa78654695dfd1f43 ~*~
 
 # Use new container infrastructure to enable caching
 sudo: false
@@ -61,7 +61,7 @@ script:
         stack --no-terminal build --install-ghc --coverage --test --bench --no-run-benchmarks --haddock --no-haddock-deps
         ;;
       ghc-8.4)
-        echo "{ resolver: lts-12.14, packages: [ '.' ], extra-deps: [], flags: {} }" > stack.yaml
+        echo "{ resolver: lts-12.15, packages: [ '.' ], extra-deps: [], flags: {} }" > stack.yaml
         stack --no-terminal build --install-ghc --coverage --test --bench --no-run-benchmarks --haddock --no-haddock-deps
         ;;
       ghc-8.6)
diff --git a/cryptonite.cabal b/cryptonite.cabal
index 5d19c59..f2fa323 100644
--- a/cryptonite.cabal
+++ b/cryptonite.cabal
@@ -36,7 +36,7 @@ Build-Type:          Simple
 Homepage:            https://github.com/haskell-crypto/cryptonite
 Bug-reports:         https://github.com/haskell-crypto/cryptonite/issues
 Cabal-Version:       >=1.18
-tested-with:         GHC==8.6.1, GHC==8.4.3, GHC==8.2.2, GHC==8.0.2
+tested-with:         GHC==8.6.1, GHC==8.4.4, GHC==8.2.2, GHC==8.0.2
 extra-doc-files:     README.md CHANGELOG.md
 extra-source-files:  cbits/*.h
                      cbits/aes/*.h
diff --git a/stack.yaml b/stack.yaml
index 57f8c6b..bd5b3a6 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,3 +1,3 @@
-# ~*~ auto-generated by haskell-ci with config : 7cb8db1c90854ae440aca1b3cde96895bf9153ceeddfe5fd39d82f8e300414c6 ~*~
-{ resolver: lts-12.14, packages: [ '.' ], extra-deps: [], flags: {} }
+# ~*~ auto-generated by haskell-ci with config : c5de1915986b17c62e2a4cbe1fb7b3d47a6b1dc45a8f4d4fa78654695dfd1f43 ~*~
+{ resolver: lts-12.15, packages: [ '.' ], extra-deps: [], flags: {} }