diff --git a/.github/workflows/bump-version.yml b/.github/workflows/bump-version.yml
index c602ffc018..e574a2ab34 100644
--- a/.github/workflows/bump-version.yml
+++ b/.github/workflows/bump-version.yml
@@ -195,11 +195,11 @@ jobs:
         echo "steps.script.outputs.old_tag=v${current_tag}"
         echo "old_tag=v${current_tag}" >> $GITHUB_OUTPUT
 
-    - name: Set up Python 3.13
+    - name: Set up Python 3.12
       if: success()
       uses: actions/setup-python@v5
       with:
-        python-version: '3.13'
+        python-version: '3.12'
 
     - name: Install Python dependencies
       run: |
diff --git a/.github/workflows/ci-windows.yml b/.github/workflows/ci-windows.yml
index d4cff442ff..b625754baf 100644
--- a/.github/workflows/ci-windows.yml
+++ b/.github/workflows/ci-windows.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9f56a516c1..ed42f3670b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,13 +30,13 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12']
         include:
           - os: macos-latest
-            python-version: '3.13'
+            python-version: '3.12'
           # Intel runner
           - os: macos-13
-            python-version: '3.13'
+            python-version: '3.12'
 
     steps:
     - uses: actions/checkout@v4
@@ -89,7 +89,7 @@ jobs:
         coverage xml
 
     - name: Report contrib coverage with Codecov
-      if: github.event_name != 'schedule' && matrix.python-version == '3.13' && matrix.os == 'ubuntu-latest'
+      if: github.event_name != 'schedule' && matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'
       uses: codecov/codecov-action@v5
       with:
         fail_ci_if_error: true
@@ -99,17 +99,17 @@ jobs:
 
     - name: Test docstring examples with doctest
       # TODO: Don't currently try to match amd64 and arm64 floating point for docs, but will in the future.
-      if: matrix.python-version == '3.13' && matrix.os != 'macos-latest'
+      if: matrix.python-version == '3.12' && matrix.os != 'macos-latest'
       run: coverage run --data-file=.coverage-doctest --module pytest src/ README.rst
 
     - name: Coverage report for doctest only
-      if: matrix.python-version == '3.13' && matrix.os != 'macos-latest'
+      if: matrix.python-version == '3.12' && matrix.os != 'macos-latest'
       run: |
         coverage report --data-file=.coverage-doctest
         coverage xml --data-file=.coverage-doctest -o doctest-coverage.xml
 
     - name: Report doctest coverage with Codecov
-      if: github.event_name != 'schedule' && matrix.python-version == '3.13' && matrix.os == 'ubuntu-latest'
+      if: github.event_name != 'schedule' && matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'
       uses: codecov/codecov-action@v5
       with:
         fail_ci_if_error: true
@@ -118,6 +118,6 @@ jobs:
         token: ${{ secrets.CODECOV_TOKEN }}
 
     - name: Run benchmarks
-      if: github.event_name == 'schedule' && matrix.python-version == '3.13'
+      if: github.event_name == 'schedule' && matrix.python-version == '3.12'
       run: |
         pytest --benchmark-sort=mean tests/benchmarks/test_benchmark.py
diff --git a/.github/workflows/dependencies-head.yml b/.github/workflows/dependencies-head.yml
index 0742036e50..c714392d81 100644
--- a/.github/workflows/dependencies-head.yml
+++ b/.github/workflows/dependencies-head.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, macos-13]
-        python-version: ['3.13']
+        python-version: ['3.12']
 
     steps:
     - uses: actions/checkout@v4
@@ -50,7 +50,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.13']
+        python-version: ['3.12']
 
     steps:
     - uses: actions/checkout@v4
@@ -79,7 +79,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.13']
+        python-version: ['3.12']
 
     steps:
     - uses: actions/checkout@v4
@@ -105,7 +105,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.13']
+        python-version: ['3.12']
 
     steps:
     - uses: actions/checkout@v4
@@ -130,7 +130,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.13']
+        python-version: ['3.12']
 
     steps:
     - uses: actions/checkout@v4
@@ -168,7 +168,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.13']
+        python-version: ['3.12']
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index a802b904c9..c7a99fda4d 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -27,7 +27,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: '3.13'
+        python-version: '3.12'
 
     - name: Install Python dependencies
       run: |
diff --git a/.github/workflows/notebooks.yml b/.github/workflows/notebooks.yml
index 8e06f6e6d7..52b6fb1af4 100644
--- a/.github/workflows/notebooks.yml
+++ b/.github/workflows/notebooks.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.13']
+        python-version: ['3.12']
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/publish-package.yml b/.github/workflows/publish-package.yml
index e4f2d7dd43..370cbf41a5 100644
--- a/.github/workflows/publish-package.yml
+++ b/.github/workflows/publish-package.yml
@@ -41,10 +41,10 @@ jobs:
       with:
         fetch-depth: 0
 
-    - name: Set up Python 3.13
+    - name: Set up Python 3.12
       uses: actions/setup-python@v5
       with:
-        python-version: '3.13'
+        python-version: '3.12'
 
     - name: Install python-build and twine
       run: |
diff --git a/.github/workflows/release_tests.yml b/.github/workflows/release_tests.yml
index 362b019b37..4a2b910dda 100644
--- a/.github/workflows/release_tests.yml
+++ b/.github/workflows/release_tests.yml
@@ -21,13 +21,13 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12']
         include:
           - os: macos-latest
-            python-version: '3.13'
+            python-version: '3.12'
           # Intel runner
           - os: macos-13
-            python-version: '3.13'
+            python-version: '3.12'
       fail-fast: false
 
     steps:
diff --git a/pyproject.toml b/pyproject.toml
index 250987e44f..67e13ac0f7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,6 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
-    "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Physics",
@@ -237,7 +236,7 @@ exclude_also = [
 
 [tool.mypy]
 files = "src"
-python_version = "3.13"
+python_version = "3.12"
 warn_unused_configs = true
 strict = true
 enable_error_code = ["ignore-without-code", "redundant-expr", "truthy-bool"]