diff --git a/.github/workflows/check-generated-files.yml b/.github/workflows/check-generated-files.yml
index f68ddf0c0de5..9b3e5d3a92fc 100644
--- a/.github/workflows/check-generated-files.yml
+++ b/.github/workflows/check-generated-files.yml
@@ -37,7 +37,7 @@ jobs:
         uses: actions/setup-python@v5
         id: install_python
         with:
-          python-version: "3.11"
+          python-version: "3.12"
           cache: pip
           cache-dependency-path: requirements-dev.txt
 
diff --git a/.github/workflows/ibis-backends.yml b/.github/workflows/ibis-backends.yml
index 5ef41e9bf8a9..0cafdd05e500 100644
--- a/.github/workflows/ibis-backends.yml
+++ b/.github/workflows/ibis-backends.yml
@@ -563,6 +563,11 @@ jobs:
             deps:
               - "'pandas@>2'"
               - "'numpy@>1.24'"
+          - python-version: "3.12"
+            pyspark-version: "3.5"
+            deps:
+              - "'pandas@>2'"
+              - "'numpy@>1.24'"
     steps:
       - name: checkout
         uses: actions/checkout@v4
diff --git a/.github/workflows/ibis-benchmarks.yml b/.github/workflows/ibis-benchmarks.yml
index a7652fa52915..95ba89863c0c 100644
--- a/.github/workflows/ibis-benchmarks.yml
+++ b/.github/workflows/ibis-benchmarks.yml
@@ -30,7 +30,7 @@ jobs:
         uses: actions/setup-python@v5
         id: install_python
         with:
-          python-version: "3.11"
+          python-version: "3.12"
           cache: poetry
 
       - name: install system dependencies
diff --git a/.github/workflows/ibis-main.yml b/.github/workflows/ibis-main.yml
index f7bbe24420e9..61f9ea4325b2 100644
--- a/.github/workflows/ibis-main.yml
+++ b/.github/workflows/ibis-main.yml
@@ -49,6 +49,7 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -101,14 +102,7 @@ jobs:
 
   test_shapely_duckdb_import:
     name: Test shapely and duckdb import
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          - ubuntu-latest
-        python-version:
-          - "3.11"
+    runs-on: ubuntu-latest
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -120,10 +114,10 @@ jobs:
         uses: actions/setup-python@v5
         id: install_python
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: "3.12"
           cache: poetry
 
-      - name: install ${{ matrix.os }} system dependencies
+      - name: install system dependencies
         run: |
           set -euo pipefail
 
@@ -141,14 +135,7 @@ jobs:
     # FIXME(kszucs): re-enable this build
     if: false
     name: Doctests
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          - ubuntu-latest
-        python-version:
-          - "3.11"
+    runs-on: ubuntu-latest
     steps:
       - name: install system dependencies
         run: |
@@ -167,7 +154,7 @@ jobs:
         uses: actions/setup-python@v5
         id: install_python
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: "3.12"
           cache: poetry
 
       - name: install ibis with all extras
diff --git a/.github/workflows/nix-skip-helper.yml b/.github/workflows/nix-skip-helper.yml
index 7c09f2c2b9f0..aca9879f1871 100644
--- a/.github/workflows/nix-skip-helper.yml
+++ b/.github/workflows/nix-skip-helper.yml
@@ -36,5 +36,6 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
     steps:
       - run: echo "No build required"
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index c9747dc72c2c..95bb6e52dfa8 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -37,6 +37,7 @@ jobs:
           - "3.9"
           - "3.10"
           - "3.11"
+          - "3.12"
     steps:
       - name: checkout
         uses: actions/checkout@v4
diff --git a/flake.nix b/flake.nix
index 3f7f55053adf..858eff0aa63e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -125,9 +125,9 @@
     in
     rec {
       packages = {
-        inherit (pkgs) ibis39 ibis310 ibis311;
+        inherit (pkgs) ibis39 ibis310 ibis311 ibis312;
 
-        default = pkgs.ibis311;
+        default = pkgs.ibis312;
 
         inherit (pkgs) update-lock-files gen-all-extras gen-examples check-release-notes-spelling;
       };
@@ -136,8 +136,9 @@
         ibis39 = mkDevShell pkgs.ibisDevEnv39;
         ibis310 = mkDevShell pkgs.ibisDevEnv310;
         ibis311 = mkDevShell pkgs.ibisDevEnv311;
+        ibis312 = mkDevShell pkgs.ibisDevEnv312;
 
-        default = ibis311;
+        default = ibis312;
 
         preCommit = pkgs.mkShell {
           name = "preCommit";
diff --git a/ibis/backends/tests/test_temporal.py b/ibis/backends/tests/test_temporal.py
index 848309b5f10b..f05da04a3f12 100644
--- a/ibis/backends/tests/test_temporal.py
+++ b/ibis/backends/tests/test_temporal.py
@@ -1575,7 +1575,7 @@ def test_now_from_projection(alltypes):
     ts = result.now
     assert len(result) == n
     assert ts.nunique() == 1
-    assert ~pd.isna(ts.iat[0])
+    assert not pd.isna(ts.iat[0])
 
 
 DATE_BACKEND_TYPES = {
diff --git a/nix/overlay.nix b/nix/overlay.nix
index 5608f2ca97b2..72661c22d1c8 100644
--- a/nix/overlay.nix
+++ b/nix/overlay.nix
@@ -28,13 +28,15 @@ in
   ibis39 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python39; };
   ibis310 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python310; };
   ibis311 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python311; };
+  ibis312 = pkgs.callPackage ./ibis.nix { python3 = pkgs.python312; };
 
   ibisDevEnv39 = mkPoetryDevEnv pkgs.python39;
   ibisDevEnv310 = mkPoetryDevEnv pkgs.python310;
   ibisDevEnv311 = mkPoetryDevEnv pkgs.python311;
+  ibisDevEnv312 = mkPoetryDevEnv pkgs.python312;
 
   ibisSmallDevEnv = mkPoetryEnv {
-    python = pkgs.python311;
+    python = pkgs.python312;
     groups = [ "dev" ];
     extras = [ ];
   };
@@ -73,7 +75,7 @@ in
   gen-examples = pkgs.writeShellApplication {
     name = "gen-examples";
     runtimeInputs = [
-      pkgs.ibisDevEnv311
+      pkgs.ibisDevEnv312
       (pkgs.rWrapper.override {
         packages = with pkgs.rPackages; [
           Lahman
diff --git a/poetry-overrides.nix b/poetry-overrides.nix
index 212b84c5da3c..c453045be05c 100644
--- a/poetry-overrides.nix
+++ b/poetry-overrides.nix
@@ -42,4 +42,12 @@ self: super: {
       rm $out/${self.python.sitePackages}/pyflink/__pycache__/version.*.pyc
     '';
   });
+
+  thrift = super.thrift.overridePythonAttrs (attrs: {
+    # ignore silly bytecode-compilation-on-install for Pythons >= 3.12
+    postPatch = (attrs.postPatch or "") +
+      self.pkgs.lib.optionalString (self.pkgs.lib.versionAtLeast self.python.version "3.12") ''
+        substituteInPlace setup.cfg --replace 'optimize = 1' 'optimize = 0'
+      '';
+  });
 }
diff --git a/pyproject.toml b/pyproject.toml
index dacb12246939..f7fbbd219c0d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -323,6 +323,10 @@ filterwarnings = [
   "ignore:is_sparse is deprecated and will be removed in a future version:DeprecationWarning",
   # google-api-core
   "ignore:Please install grpcio-status to obtain helpful grpc error messages.",
+  # dateutil tz
+  'ignore:datetime\.datetime\.utcfromtimestamp\(\) is deprecated and scheduled for removal:DeprecationWarning',
+  # types using custom tp_new are deprecated in python 3.12
+  "ignore:Type .+ uses PyType_Spec with a metaclass that has custom tp_new:DeprecationWarning",
 ]
 empty_parameter_set_mark = "fail_at_collect"
 markers = [