diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revsion history of strict-mvar
 
+## 1.5.0.0
+
+* `io-sim-1.5.0.0`.
+
 ## 1.4.0.0
 
 * `io-sim-1.4.0.0`.
diff --git a/strict-mvar.cabal b/strict-mvar.cabal
--- a/strict-mvar.cabal
+++ b/strict-mvar.cabal
@@ -1,6 +1,6 @@
 cabal-version:       3.0
 name:                strict-mvar
-version:             1.4.0.0
+version:             1.5.0.0
 synopsis:            Strict MVars for IO and IOSim
 description:
   Strict @MVar@ interface compatible with
@@ -15,7 +15,7 @@
 build-type:          Simple
 extra-doc-files:     CHANGELOG.md README.md
 bug-reports:         https://github.com/input-output-hk/io-sim/issues
-tested-with:         GHC == { 8.10, 9.2, 9.4, 9.6, 9.8 }
+tested-with:         GHC == { 8.10, 9.2, 9.4, 9.6, 9.8, 9.10 }
 
 source-repository head
   type:     git
@@ -28,8 +28,8 @@
   exposed-modules:     Control.Concurrent.Class.MonadMVar.Strict
   default-language:    Haskell2010
   default-extensions:  ImportQualifiedPost
-  build-depends:       base        >= 4.9 && <4.20,
-                       io-classes ^>= 1.4
+  build-depends:       base        >= 4.9 && <4.21,
+                       io-classes ^>= 1.5
   ghc-options:         -Wall
                        -Wno-unticked-promoted-constructors
                        -Wcompat
@@ -47,7 +47,7 @@
                        Test.Utils
   default-language:    Haskell2010
   default-extensions:  ImportQualifiedPost
-  build-depends:       base >=4.9 && <4.20,
+  build-depends:       base,
                        io-sim,
                        nothunks,
                        QuickCheck,