diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.2.0.11
+
+- Expand version bounds to include bytestring v0.12.x.
+
 # 0.2.0.10
 
 - Expand version bounds to include aeson v2.2.x.
diff --git a/bugsnag-hs.cabal b/bugsnag-hs.cabal
--- a/bugsnag-hs.cabal
+++ b/bugsnag-hs.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           bugsnag-hs
-version:        0.2.0.10
+version:        0.2.0.11
 synopsis:       A Bugsnag client for Haskell.
 description:    Please see the README at <https://github.com/jwoudenberg/bugsnag-hs>.
 category:       Web
@@ -37,7 +37,7 @@
   build-depends:
       aeson >=1.2.4.0 && <2.3
     , base >=4.10.1.0 && <5
-    , bytestring >=0.10.8.2 && <0.12
+    , bytestring >=0.10.8.2 && <0.13
     , http-client >=0.5.10 && <0.8
     , text >=1.2.3.0 && <2.1
     , time >=1.8.0.2 && <2