diff --git a/.github/workflows/all.yml b/.github/workflows/all.yml
index a7aa11530..a712cd1d6 100644
--- a/.github/workflows/all.yml
+++ b/.github/workflows/all.yml
@@ -36,6 +36,20 @@ jobs:
       - name: Check Python formatting
         run: ruff format --check ${{ github.workspace }}/pedalboard --diff
 
+  check-test-requirements:
+    runs-on: "ubuntu-24.04"
+    name: Check test-requirements.txt is in sync
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+      - name: Check test-requirements.txt is in sync with uv.lock
+        run: |
+          cp test-requirements.txt /tmp/test-requirements.txt.before
+          ./scripts/update_test_requirements.sh
+          diff /tmp/test-requirements.txt.before test-requirements.txt \
+            || (echo "test-requirements.txt is out of sync with uv.lock. Run ./scripts/update_test_requirements.sh and commit." && exit 1)
+
   type-check-python:
     runs-on: "ubuntu-24.04"
     continue-on-error: true
diff --git a/pyproject.toml b/pyproject.toml
index 9ffc49aab..45f244c6e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,16 +60,18 @@ version = "0.9.23"
 
 [project.optional-dependencies]
 test = [
+    "coverage",
     "pytest",
-    "pyright",
-    "mutagen",
     "pytest-cov",
     "pytest-mock",
     "tqdm",
     "psutil",
+    # mypy 2.0+ unconditionally depends on ast-serialize, which requires Rust
+    # and can't be built from source on musllinux_1_1.
     "mypy<2",
     "pyright",
     "mido",
+    "mutagen",
 ]
 
 [tool.scikit-build]
diff --git a/scripts/update_test_requirements.sh b/scripts/update_test_requirements.sh
new file mode 100755
index 000000000..565e5ce93
--- /dev/null
+++ b/scripts/update_test_requirements.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+set -euo pipefail
+cd "$(dirname "$0")/.."
+uv export --extra test --no-dev --no-emit-project --no-hashes --no-header --frozen \
+  | grep -v '^ ' \
+  | grep -v '^$' \
+  > test-requirements.txt
diff --git a/test-requirements.txt b/test-requirements.txt
index f6816ae64..ee846d45b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,23 +1,20 @@
-coverage
-pytest>6.2
-pytest-cov
-pytest-mock
-pybind11<2.13; python_version < '3.7'
-pybind11>=2.13; python_version >= '3.7'
-setuptools>=59
-pip>22; python_version > '3.6'
-pip>21; python_version < '3.7'
-wheel
-
-numpy>=2.1.0rc1; python_version>="3.13"
-numpy>=2; python_version>="3.9" and python_version<"3.13"
-numpy<2; python_version<="3.8"
-tqdm
-psutil
-mypy<2
-pyright
-# ty  # Uncomment to enable Astral type checker (still in early development)
-
-# For MIDI support - only in test though!
-mido
-mutagen
\ No newline at end of file
+colorama==0.4.6 ; sys_platform == 'win32'
+coverage==7.8.0
+exceptiongroup==1.3.0 ; python_full_version < '3.11'
+iniconfig==2.1.0
+mido==1.3.3
+mutagen==1.47.0
+mypy==1.15.0
+mypy-extensions==1.1.0
+nodeenv==1.9.1
+numpy==2.2.5
+packaging==25.0
+pluggy==1.6.0
+psutil==7.0.0
+pyright==1.1.400
+pytest==8.3.5
+pytest-cov==6.1.1
+pytest-mock==3.14.0
+tomli==2.2.1 ; python_full_version <= '3.11'
+tqdm==4.67.1
+typing-extensions==4.13.2
diff --git a/uv.lock b/uv.lock
index 189eee150..40d4ea67a 100644
--- a/uv.lock
+++ b/uv.lock
@@ -255,6 +255,7 @@ dependencies = [
 
 [package.optional-dependencies]
 test = [
+    { name = "coverage" },
     { name = "mido" },
     { name = "mutagen" },
     { name = "mypy" },
@@ -268,6 +269,7 @@ test = [
 
 [package.metadata]
 requires-dist = [
+    { name = "coverage", marker = "extra == 'test'" },
     { name = "mido", marker = "extra == 'test'" },
     { name = "mutagen", marker = "extra == 'test'" },
     { name = "mypy", marker = "extra == 'test'", specifier = "<2" },