diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 86e3e2a..6249294 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ghc: ["8.10", "9.0", "9.2", "9.4", "9.6", "9.8", "9.10"]
+        ghc: ["8.10", "9.0", "9.2", "9.4", "9.6", "9.8", "9.10", "9.12"]
     steps:
       - uses: actions/checkout@v4
       - name: "Setup haskell"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bda5975..6371316 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for nothunks
 
+## 0.3.1 -- 2025-01-06
+
+* Make it build with ghc-9.12.
+
 ## 0.3.0 -- 2024-08-13
 
 * Include _both_ `Context` _and_ `Info` in `ThunkInfo` (#54)
diff --git a/cabal.project b/cabal.project
index 5f7aa6f..60d8f07 100644
--- a/cabal.project
+++ b/cabal.project
@@ -4,3 +4,9 @@ package nothunks
   tests: True
 
 test-show-details: direct
+
+if impl (ghc >= 9.12)
+  allow-newer:
+    , filepath:template-haskell
+    , hedgehog:template-haskell
+    , text:template-haskell
diff --git a/nothunks.cabal b/nothunks.cabal
index eaf0ee6..2fa1a8c 100644
--- a/nothunks.cabal
+++ b/nothunks.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               nothunks
-version:            0.3.0.0
+version:            0.3.1
 synopsis:           Examine values for unexpected thunks
 description:        Long lived application data typically should not contain
                     any thunks. This library can be used to examine values for
@@ -43,13 +43,13 @@ library
     build-depends:    base       >= 4.12 && < 5
                     , containers >= 0.5  && < 0.8
                     , stm        >= 2.5  && < 2.6
-                    , time       >= 1.5  && < 1.13
+                    , time       >= 1.5  && < 1.15
 
                       -- Whatever is bundled with ghc
                     , ghc-heap
 
     if impl(ghc >= 9.2)
-      build-depends:  wherefrom-compat ^>= 0.1.1
+      build-depends:  wherefrom-compat ^>= 0.2
 
     if flag(bytestring)
       build-depends:  bytestring >= 0.10 && < 0.13
@@ -80,7 +80,7 @@ test-suite nothunks-test
                     , ghc-prim
 
                       -- Additional dependencies
-                    , hedgehog       >= 1.1 && < 1.5
+                    , hedgehog       >= 1.1 && < 1.6
                     , random         >= 1.1 && < 1.3
                     , tasty          >= 1.3 && < 1.6
                     , tasty-hedgehog >= 1.1 && < 1.5