diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 832c6fd..c654c28 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -23,7 +23,7 @@ jobs:
                   python-version: "${{ matrix.python-version }}"
             - uses: haskell-actions/setup@v2
               with:
-                  ghc-version: '9.4'
+                  ghc-version: '9.6'
                   cabal-version: latest
             - run: cabal update
             - run: sudo apt install x11-apps python3-pytest python3-cffi flake8
diff --git a/xcffib.cabal b/xcffib.cabal
index ce4ed0d..e55a970 100644
--- a/xcffib.cabal
+++ b/xcffib.cabal
@@ -25,13 +25,13 @@ source-repository head
 
 library
   build-depends: base ==4.*,
-                 xcb-types >= 0.13.0 && < 0.14,
+                 xcb-types >= 0.14.0 && < 0.15,
                  language-python >= 0.5.8 && < 0.6,
                  filepath >= 1.4.2 && < 1.5,
                  filemanip >= 0.3.6 && < 0.4,
                  split >= 0.2.3 && < 0.3,
                  containers >= 0.6.5 && < 0.7,
-                 mtl >= 2.2.2 && < 2.3,
+                 mtl >= 2.2.2 && < 2.4,
                  attoparsec >= 0.14.4 && < 0.15,
                  bytestring >= 0.11.3 && < 0.12,
                  either >= 5.0.2 && < 5.1
@@ -46,13 +46,13 @@ executable xcffibgen
   hs-source-dirs: generator
   build-depends: base ==4.*,
                  xcffib,
-                 xcb-types >= 0.13.0 && < 0.14,
+                 xcb-types >= 0.14.0 && < 0.15,
                  language-python >= 0.5.8 && < 0.6,
                  filepath >= 1.4.2 && < 1.5,
                  filemanip >= 0.3.6 && < 0.4,
                  split >= 0.2.3 && < 0.3,
                  containers >= 0.6.5 && < 0.7,
-                 mtl >= 2.2.2 && < 2.3,
+                 mtl >= 2.2.2 && < 2.4,
                  attoparsec >= 0.14.4 && < 0.15,
                  bytestring >= 0.11.3 && < 0.12,
                  either >= 5.0.2 && < 5.1,
@@ -81,7 +81,7 @@ test-suite GeneratorTests.hs
   type: exitcode-stdio-1.0
   build-depends: base ==4.*,
                  xcffib,
-                 xcb-types >= 0.13.0 && < 0.14,
+                 xcb-types >= 0.14.0 && < 0.15,
                  language-python >= 0.5.8 && < 0.6,
                  filepath >= 1.4.2 && < 1.5,
                  HUnit >= 1.6.2 && < 1.7,