diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 8268ad4..d33fd46 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -8,7 +8,6 @@ on:
       - ".gitignore"
       - ".prettierignore"
       - "MANIFEST.in"
-      - "pyproject.toml"
   pull_request:
 
 concurrency:
@@ -103,6 +102,11 @@ jobs:
         run: |
           bandit -c pyproject.toml -r src
 
+      - name: "validate-pyproject"
+        if: ${{ !cancelled() }}
+        run: |
+          validate-pyproject pyproject.toml
+
       - name: "prettier"
         if: ${{ !cancelled() }}
         run: |
diff --git a/pyproject.toml b/pyproject.toml
index 165f856..46d7e71 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
     "Operating System :: OS Independent",
-    "License :: License :: OSI Approved :: MIT License",
+    "License :: OSI Approved :: MIT License",
     "Natural Language :: English",
 ]
 license = { text = "MIT" }
@@ -41,6 +41,7 @@ dev = [
     "setuptools",
     "ty",
     "types-requests",
+    "validate-pyproject[all]",
 ]
 
 [project.urls]