diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 0.3.5.7
+* Loose upper bound for aeson 1.4
+
 ## 0.3.5.6
 * Add Dockerfile
 
diff --git a/hapistrano.cabal b/hapistrano.cabal
--- a/hapistrano.cabal
+++ b/hapistrano.cabal
@@ -1,5 +1,5 @@
 name:                hapistrano
-version:             0.3.5.6
+version:             0.3.5.7
 synopsis:            A deployment library for Haskell applications
 description:
   .
@@ -28,7 +28,7 @@
 bug-reports:         https://github.com/stackbuilders/hapistrano/issues
 build-type:          Simple
 cabal-version:       >=1.18
-tested-with:         GHC==7.10.3, GHC==8.0.2, GHC==8.2.2, GHC==8.4.2
+tested-with:         GHC==7.10.3, GHC==8.0.2, GHC==8.2.2, GHC==8.4.3
 extra-source-files:  CHANGELOG.md
                    , README.md
                    , Dockerfile
@@ -70,7 +70,7 @@
   main-is:             Main.hs
   other-modules:       Config
                      , Paths_hapistrano
-  build-depends:       aeson              >= 0.11 && < 1.4
+  build-depends:       aeson              >= 0.11 && < 1.5
                      , async              >= 2.0.1.6 && < 2.4
                      , base               >= 4.8 && < 5.0
                      , formatting         >= 6.2 && < 7.0