diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index 53a5138..0b704a8 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -1,5 +1,10 @@
 name: Haskell CI
 
+# Limit concurrent runs of this workflow within a single PR
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches: [ "main" ]
@@ -16,8 +21,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["8.10.7", "9.2.7", "9.4.5", "9.6.1"]
-        cabal: ["3.10.1.0"]
+        ghc: ["8.10.7", "9.2.8", "9.4.8", "9.6.3", "9.8.1"]
+        cabal: ["3.10.2.0"]
         os: [ubuntu-latest, windows-latest, macOS-latest]
 
     steps:
@@ -72,8 +77,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["9.2.7"]
-        cabal: ["3.10.1.0"]
+        ghc: ["9.2.8"]
+        cabal: ["3.10.2.0"]
         os: [ubuntu-latest]
 
     steps:
@@ -131,8 +136,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["9.2.7"]
-        cabal: ["3.10.1.0"]
+        ghc: ["9.2.8"]
+        cabal: ["3.10.2.0"]
         os: [ubuntu-latest]
 
     steps:
@@ -190,8 +195,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["9.2.7"]
-        cabal: ["3.10.1.0"]
+        ghc: ["9.2.8"]
+        cabal: ["3.10.2.0"]
         os: [ubuntu-latest]
 
     steps:
diff --git a/cabal.project b/cabal.project
index 3563fc1..9e73ba9 100644
--- a/cabal.project
+++ b/cabal.project
@@ -10,6 +10,12 @@ repository cardano-haskell-packages
     c00aae8461a256275598500ea0e187588c35a5d5d7454fb57eac18d9edb86a56
     d4a35cd3121aa00d18544bb0ac01c3e1691d618f462c46129271bccf39f7e8ee
 
+index-state:
+  -- Bump this if you need newer packages from Hackage
+  , hackage.haskell.org 2023-11-30T00:00:00Z
+  -- Bump this if you need newer packages from CHaP
+  , cardano-haskell-packages 2023-11-30T00:00:00Z
+
 packages:
   fs-api
   fs-sim
@@ -17,3 +23,8 @@ packages:
 tests: True
 test-show-details: direct
 benchmarks: True
+
+if impl(ghc >=9.8)
+  allow-newer:
+    -- https://github.com/wrengr/unix-bytestring/pull/46
+    , unix-bytestring:base
diff --git a/fs-api/CHANGELOG.md b/fs-api/CHANGELOG.md
index e754485..7924768 100644
--- a/fs-api/CHANGELOG.md
+++ b/fs-api/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Revision history for fs-api
 
+## ??? -- ???
+
+### Patch
+
+* Make it build with `ghc-9.8`.
+
 ## 0.2.0.0 -- 2023-08-01
 
 ### Breaking
diff --git a/fs-api/fs-api.cabal b/fs-api/fs-api.cabal
index 6592a39..878c67d 100644
--- a/fs-api/fs-api.cabal
+++ b/fs-api/fs-api.cabal
@@ -44,15 +44,15 @@ library
 
   default-language: Haskell2010
   build-depends:
-    , base        >=4.14 && <4.19
-    , bytestring  >=0.10 && <0.12
+    , base        >=4.14 && <4.20
+    , bytestring  >=0.10 && <0.13
     , containers  >=0.5  && <0.7
     , deepseq
     , digest
     , directory   >=1.3  && <1.4
     , filepath    >=1.4  && <1.5
     , io-classes  >=0.3  && <1.4
-    , text        >=1.2  && <2.1
+    , text        >=1.2  && <2.2
 
   if os(windows)
     build-depends: Win32 >=2.6.1.0
diff --git a/fs-sim/CHANGELOG.md b/fs-sim/CHANGELOG.md
index 753b4ef..2f502da 100644
--- a/fs-sim/CHANGELOG.md
+++ b/fs-sim/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Revision history for fs-sim
 
+## ??? -- ???
+
+### Patch
+
+* Make it build with `ghc-9.8`.
+
 ## 0.2.1.0 -- 2023-08-01
 
 ### Non-breaking
diff --git a/fs-sim/fs-sim.cabal b/fs-sim/fs-sim.cabal
index fee115a..c4f1700 100644
--- a/fs-sim/fs-sim.cabal
+++ b/fs-sim/fs-sim.cabal
@@ -14,7 +14,7 @@ maintainer:      operations@iohk.io
 category:        Testing
 build-type:      Simple
 extra-doc-files: CHANGELOG.md
-tested-with:     GHC ==8.10 || ==9.2 || ==9.4 || ==9.6
+tested-with:     GHC ==8.10 || ==9.2 || ==9.4 || ==9.6 || ==9.8
 
 source-repository head
   type:     git
@@ -33,16 +33,16 @@ library
 
   default-language: Haskell2010
   build-depends:
-    , base               >=4.14 && <4.19
+    , base               >=4.14 && <4.20
     , base16-bytestring
-    , bytestring         >=0.10 && <0.12
+    , bytestring         >=0.10 && <0.13
     , containers         >=0.5  && <0.7
     , fs-api             ^>=0.2
     , io-classes         >=0.3  && <1.4
     , mtl
     , QuickCheck
     , strict-stm         >=0.3  && <1.4
-    , text               >=1.2  && <2.1
+    , text               >=1.2  && <2.2
 
   ghc-options:
     -Wall -Wcompat -Wincomplete-uni-patterns
@@ -69,7 +69,7 @@ test-suite fs-sim-test
     , generics-sop
     , pretty-show
     , QuickCheck
-    , quickcheck-state-machine  >=0.7.2
+    , quickcheck-state-machine  >=0.7.2 && <0.8
     , random
     , tasty
     , tasty-hunit