diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+- 0.4.6.1 (2022-06-28)
+    * Bump `aeson` dependency upper bound to 2.2
+    * Bump `bytestring` dependency upper bound to 0.12
+
 - 0.4.6.0 (2020-05-28)
     * Add source code locations to cost-centre details (by Rodney Lorrimar)
     * Bump `aeson` dependency to 1.5
diff --git a/profiteur.cabal b/profiteur.cabal
--- a/profiteur.cabal
+++ b/profiteur.cabal
@@ -1,5 +1,5 @@
 Name:                profiteur
-Version:             0.4.6.0
+Version:             0.4.6.1
 Synopsis:            Treemap visualiser for GHC prof files
 Description:         Treemap visualiser for GHC prof files
 Homepage:            http://github.com/jaspervdj/profiteur
@@ -54,9 +54,9 @@
     Paths_profiteur
 
   Build-depends:
-    aeson                >= 0.6  && < 1.6,
+    aeson                >= 0.6  && < 2.2,
     base                 >= 4.8  && < 5,
-    bytestring           >= 0.9  && < 0.11,
+    bytestring           >= 0.9  && < 0.12,
     containers           >= 0.5  && < 0.7,
     filepath             >= 1.3  && < 1.5,
     ghc-prof             >= 1.3  && < 1.5,
diff --git a/src/Profiteur/Core.hs b/src/Profiteur/Core.hs
--- a/src/Profiteur/Core.hs
+++ b/src/Profiteur/Core.hs
@@ -19,7 +19,6 @@
 import qualified Data.HashMap.Strict as HMS
 import           Data.List           (foldl')
 import           Data.Maybe          (mapMaybe, maybeToList)
-import           Data.Monoid         ((<>))
 import qualified Data.Text           as T
 import qualified Data.Vector         as V