diff --git a/.github/workflows/haskell-ci.yml b/.github/workflows/haskell-ci.yml
index 5ce9fb3..d1cdccd 100644
--- a/.github/workflows/haskell-ci.yml
+++ b/.github/workflows/haskell-ci.yml
@@ -32,6 +32,11 @@ jobs:
     strategy:
       matrix:
         include:
+          - compiler: ghc-9.12.2
+            compilerKind: ghc
+            compilerVersion: 9.12.2
+            setup-method: ghcup
+            allow-failure: false
           - compiler: ghc-9.10.1
             compilerKind: ghc
             compilerVersion: 9.10.1
@@ -81,12 +86,12 @@ jobs:
       - name: Install GHCup
         run: |
           mkdir -p "$HOME/.ghcup/bin"
-          curl -sL https://downloads.haskell.org/ghcup/0.1.50.0/x86_64-linux-ghcup-0.1.50.0 > "$HOME/.ghcup/bin/ghcup"
+          curl -sL https://downloads.haskell.org/ghcup/0.1.50.1/x86_64-linux-ghcup-0.1.50.1 > "$HOME/.ghcup/bin/ghcup"
           chmod a+x "$HOME/.ghcup/bin/ghcup"
       - name: Install cabal-install
         run: |
-          "$HOME/.ghcup/bin/ghcup" install cabal 3.14.1.1 || (cat "$HOME"/.ghcup/logs/*.* && false)
-          echo "CABAL=$HOME/.ghcup/bin/cabal-3.14.1.1 -vnormal+nowrap" >> "$GITHUB_ENV"
+          "$HOME/.ghcup/bin/ghcup" install cabal 3.14.2.0 || (cat "$HOME"/.ghcup/logs/*.* && false)
+          echo "CABAL=$HOME/.ghcup/bin/cabal-3.14.2.0 -vnormal+nowrap" >> "$GITHUB_ENV"
       - name: Install GHC (GHCup)
         if: matrix.setup-method == 'ghcup'
         run: |
diff --git a/cabal.haskell-ci b/cabal.haskell-ci
index 399c16b..e1a1b7d 100644
--- a/cabal.haskell-ci
+++ b/cabal.haskell-ci
@@ -17,5 +17,5 @@ constraint-set servant-0.19
   constraints: servant ==0.19.*
 
 constraint-set servant-0.20
-  ghc: >= 8.10 && <9.12
+  ghc: >= 8.10 && <9.14
   constraints: servant ==0.20.*
diff --git a/servant-swagger-ui-core/servant-swagger-ui-core.cabal b/servant-swagger-ui-core/servant-swagger-ui-core.cabal
index f8e56a5..e4972cb 100644
--- a/servant-swagger-ui-core/servant-swagger-ui-core.cabal
+++ b/servant-swagger-ui-core/servant-swagger-ui-core.cabal
@@ -27,6 +27,7 @@ tested-with:
    || ==9.6.7
    || ==9.8.4
    || ==9.10.1
+   || ==9.12.2
 
 extra-source-files: Changelog.md
 
@@ -38,7 +39,7 @@ library
   hs-source-dirs:   src
   ghc-options:      -Wall
   build-depends:
-      base                 >=4.7      && <4.21
+      base                 >=4.7      && <4.22
     , aeson                >=0.8.0.2  && <2.3
     , blaze-markup         >=0.7.0.2  && <0.9
     , bytestring           >=0.10.4.0 && <0.13
diff --git a/servant-swagger-ui-example/servant-swagger-ui-example.cabal b/servant-swagger-ui-example/servant-swagger-ui-example.cabal
index a4d87e5..526b56e 100644
--- a/servant-swagger-ui-example/servant-swagger-ui-example.cabal
+++ b/servant-swagger-ui-example/servant-swagger-ui-example.cabal
@@ -22,6 +22,7 @@ tested-with:
    || ==9.6.7
    || ==9.8.4
    || ==9.10.1
+   || ==9.12.2
 
 source-repository head
   type:     git
@@ -32,7 +33,7 @@ executable servant-swagger-ui-example
   ghc-options:      -threaded
   build-depends:
       aeson                        >=0.8.0.2  && <2.3
-    , base                         >=4.7      && <4.21
+    , base                         >=4.7      && <4.22
     , base-compat                  >=0.9.3    && <0.15
     , lens                         >=4.7.0.1  && <5.4
     , servant
diff --git a/servant-swagger-ui-jensoleg/servant-swagger-ui-jensoleg.cabal b/servant-swagger-ui-jensoleg/servant-swagger-ui-jensoleg.cabal
index e95f119..0e7423d 100644
--- a/servant-swagger-ui-jensoleg/servant-swagger-ui-jensoleg.cabal
+++ b/servant-swagger-ui-jensoleg/servant-swagger-ui-jensoleg.cabal
@@ -26,6 +26,7 @@ tested-with:
    || ==9.6.7
    || ==9.8.4
    || ==9.10.1
+   || ==9.12.2
 
 extra-source-files:
   jensoleg.index.html.tmpl
@@ -87,7 +88,7 @@ library
   ghc-options:      -Wall
   build-depends:    servant-swagger-ui-core >=0.3.5 && <0.4
   build-depends:
-      base             >=4.7      && <4.21
+      base             >=4.7      && <4.22
     , aeson            >=0.8.0.2  && <2.3
     , bytestring       >=0.10.4.0 && <0.13
     , file-embed-lzma  >=0        && <0.2
diff --git a/servant-swagger-ui-redoc/servant-swagger-ui-redoc.cabal b/servant-swagger-ui-redoc/servant-swagger-ui-redoc.cabal
index e6ceb7c..5c5c08d 100644
--- a/servant-swagger-ui-redoc/servant-swagger-ui-redoc.cabal
+++ b/servant-swagger-ui-redoc/servant-swagger-ui-redoc.cabal
@@ -26,6 +26,7 @@ tested-with:
    || ==9.6.7
    || ==9.8.4
    || ==9.10.1
+   || ==9.12.2
 
 extra-source-files:
   redoc-dist-1.22.3/redoc.min.js
@@ -41,7 +42,7 @@ library
   ghc-options:      -Wall
   build-depends:    servant-swagger-ui-core >=0.3.5 && <0.4
   build-depends:
-      base             >=4.7      && <4.21
+      base             >=4.7      && <4.22
     , aeson            >=0.8.0.2  && <2.3
     , bytestring       >=0.10.4.0 && <0.13
     , file-embed-lzma  >=0        && <0.2
diff --git a/servant-swagger-ui/servant-swagger-ui.cabal b/servant-swagger-ui/servant-swagger-ui.cabal
index a5927b8..758bfb1 100644
--- a/servant-swagger-ui/servant-swagger-ui.cabal
+++ b/servant-swagger-ui/servant-swagger-ui.cabal
@@ -26,6 +26,7 @@ tested-with:
    || ==9.6.7
    || ==9.8.4
    || ==9.10.1
+   || ==9.12.2
 
 extra-source-files:
   CHANGELOG.md
@@ -57,7 +58,7 @@ library
   ghc-options:      -Wall
   build-depends:    servant-swagger-ui-core >=0.3.5 && <0.4
   build-depends:
-      base             >=4.7      && <4.21
+      base             >=4.7      && <4.22
     , aeson            >=0.8.0.2  && <2.3
     , bytestring       >=0.10.4.0 && <0.13
     , file-embed-lzma  >=0        && <0.2