diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for eventuo11y-batteries
 
+## 0.2.1.0 -- 2022-10-23
+
+Update for eventu11y 0.5.0.0
+
 ## 0.2.1.0 -- 2022-10-04
 
 Fixing missing scheduleCrash export
diff --git a/eventuo11y-batteries.cabal b/eventuo11y-batteries.cabal
--- a/eventuo11y-batteries.cabal
+++ b/eventuo11y-batteries.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               eventuo11y-batteries
-version:            0.2.1.0
+version:            0.2.1.1
 synopsis:           Grab bag of eventuo11y-enriched functionality
 description:
   Miscellaneous helpers for instrumenting with [eventuo11y](https://hackage.haskell.org/package/eventuo11y) and 3rd-party packages.
@@ -13,7 +13,7 @@
 copyright:          Copyright 2022 Shea Levy.
 category:           Observability
 extra-source-files: CHANGELOG.md
-tested-with:        GHC ==8.10.7 || ==9.0.2 || ==9.2.2
+tested-with:        GHC == { 8.10.7, 9.2.4 }
 
 source-repository head
   type:     git
@@ -26,26 +26,27 @@
     Observe.Event.Wai
 
   build-depends:
-    , aeson                ^>=2.0
-    , base                 >=4.14 && <4.17
-    , binary               ^>=0.8
-    , bytestring           >=0.10 && <0.12
-    , case-insensitive     ^>=1.2
-    , containers           ^>=0.6
-    , eventuo11y           >=0.2  && <0.4
-    , exceptions           ^>=0.10
-    , http-media           ^>=0.8
-    , http-types           ^>=0.12
-    , monad-control        ^>=1.0
-    , mtl                  ^>=2.2
-    , network              ^>=3.1
-    , semigroupoids        ^>=5.3
-    , servant-client       ^>=0.19
-    , servant-client-core  ^>=0.19
-    , text                 >=1.2  && <2.1
-    , transformers-base    ^>=0.4
-    , wai                  ^>=3.2
-    , warp                 ^>=3.3
+    , base                 ^>= { 4.14, 4.16 }
+    , aeson                ^>= 2.0
+    , binary               ^>= 0.8
+    , bytestring           ^>= { 0.10, 0.11 }
+    , case-insensitive     ^>= 1.2
+    , containers           ^>= 0.6
+    , eventuo11y           ^>= 0.5
+    , eventuo11y-json      ^>= 0.1
+    , http-media           ^>= 0.8
+    , http-types           ^>= 0.12
+    , monad-control        ^>= 1.0
+    , mtl                  ^>= 2.2
+    , network              ^>= 3.1
+    , safe-exceptions      ^>= 0.1
+    , semigroupoids        ^>= 5.3
+    , servant-client       ^>= 0.19
+    , servant-client-core  ^>= 0.19
+    , text                 ^>= 1.2
+    , transformers-base    ^>= 0.4
+    , wai                  ^>= 3.2
+    , warp                 ^>= 3.3
 
   hs-source-dirs:   src
   default-language: Haskell2010
diff --git a/src/Observe/Event/Crash.hs b/src/Observe/Event/Crash.hs
--- a/src/Observe/Event/Crash.hs
+++ b/src/Observe/Event/Crash.hs
@@ -28,7 +28,7 @@
   )
 where
 
-import Control.Monad.Catch
+import Control.Monad.Cleanup
 import Data.Void
 import Observe.Event
 import Observe.Event.BackendModification
@@ -36,7 +36,7 @@
 
 -- | Run an action with a 'ScheduleCrash' that can be called to crash the application.
 withScheduleCrash ::
-  (MonadMask m) =>
+  (MonadCleanup m) =>
   EventBackend m r Crashing ->
   -- | Actually perform the crash.
   DoCrash m ->
diff --git a/src/Observe/Event/Servant/Client.hs b/src/Observe/Event/Servant/Client.hs
--- a/src/Observe/Event/Servant/Client.hs
+++ b/src/Observe/Event/Servant/Client.hs
@@ -34,8 +34,8 @@
   )
 where
 
+import Control.Exception.Safe
 import Control.Monad.Base
-import Control.Monad.Catch
 import Control.Monad.Except
 import Control.Monad.Reader
 import Control.Monad.Trans.Control