diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+### 0.4.2.9
+
+- Support for aeson-1.4.
+
 ### 0.4.2.8
 
 - Support for aeson-1.3.0.0.
diff --git a/smoothie.cabal b/smoothie.cabal
--- a/smoothie.cabal
+++ b/smoothie.cabal
@@ -1,5 +1,5 @@
 name:                smoothie
-version:             0.4.2.8
+version:             0.4.2.9
 synopsis:            Smooth curves via several interpolation modes
 description:         This package exports several splines you can use
                      to interpolate points in between. It includes instances for
@@ -39,7 +39,7 @@
 
 
   build-depends:       base   >= 4.8  && < 5.0
-                     , aeson  >= 0.8  && < 1.4
+                     , aeson  >= 0.8  && < 1.5
                      , linear >= 1.16 && < 1.21
                      , text   >= 1.2  && < 1.3
                      , vector >= 0.10 && < 0.13