diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,7 @@
+0.1.3.14 - 2022 Jan 13
+
+  - Drop support for GHC 8.0 and 8.2
+
 0.1.3.12 - 2022 Jan 13
 
   - Support GHC 9.0 and 9.2
diff --git a/loc.cabal b/loc.cabal
--- a/loc.cabal
+++ b/loc.cabal
@@ -1,7 +1,7 @@
 cabal-version: 3.0
 
 name: loc
-version: 0.1.3.12
+version: 0.1.3.14
 
 synopsis: Types representing line and column positions and ranges in text files.
 
@@ -31,7 +31,7 @@
     default-language: Haskell2010
     default-extensions: NoImplicitPrelude
     ghc-options: -Wall
-    build-depends: base >= 4.9 && < 4.17
+    build-depends: base >= 4.11 && < 4.17
     build-depends: containers >= 0.5.7.1 && < 0.7
 
 common test
diff --git a/src/Data/Loc/Area.hs b/src/Data/Loc/Area.hs
--- a/src/Data/Loc/Area.hs
+++ b/src/Data/Loc/Area.hs
@@ -71,8 +71,6 @@
 
     mempty = Area Map.empty
 
-    mappend = (+)
-
 -- | '<>' = '+'
 instance Semigroup Area
   where