diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.2.0.1
+
+- Expand version bounds of test dependencies to include bytestring v0.12.
+
 # 0.2.0.0
 
 - Remove `Data.Buffer` module
diff --git a/bugsnag-hs.cabal b/bugsnag-hs.cabal
--- a/bugsnag-hs.cabal
+++ b/bugsnag-hs.cabal
@@ -4,10 +4,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 67c246cc1a26f9b2a1ad07fe282ddbf1c55256e19cff590e9e00cd34999909a5
+-- hash: 4dd881cc62263aae7812d31220a02e1ab216e41dcc7939bd56ab78a4dcc916d6
 
 name:           bugsnag-hs
-version:        0.2.0.0
+version:        0.2.0.1
 synopsis:       A Bugsnag client for Haskell.
 description:    Please see the README at <https://github.com/jwoudenberg/bugsnag-hs>.
 category:       Web
@@ -57,10 +57,10 @@
   hs-source-dirs:
       test
   build-depends:
-      aeson >=1.2.4.0 && <1.6
-    , base >=4.10.1.0 && <5
+      aeson
+    , base
     , bugsnag-hs
-    , bytestring >=0.10.8.2 && <0.11
+    , bytestring
     , hedgehog >=0.5.2 && <2.0
-    , stm >=2.4.5.0 && <2.6
+    , stm
   default-language: Haskell2010
diff --git a/src/Network/Bugsnag.hs b/src/Network/Bugsnag.hs
--- a/src/Network/Bugsnag.hs
+++ b/src/Network/Bugsnag.hs
@@ -423,7 +423,7 @@
   -- The fields below are read directly out of the cabal file for this project.
   Notifier
     { notifier_name = "bugsnag-hs",
-      notifier_version = "0.1.0.0",
+      notifier_version = "0.2.0.1",
       notifier_url = "https://github.com/jwoudenberg/bugsnag-hs#readme"
     }