diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 657343e..febe3c4 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -125,3 +125,14 @@ jobs:
                   toolchain: ${{ matrix.msrv }}
             - name: cargo +${{ matrix.msrv }} check
               run: cargo check
+    toml-fmt:
+        runs-on: ubuntu-latest
+        name: toml / fmt
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  submodules: true
+            - name: Install taplo
+              uses: docker://docker.io/tamasfe/taplo:latest
+              with:
+                  args: fmt --check --diff
diff --git a/.taplo.toml b/.taplo.toml
index ece5edc..66e2ba0 100644
--- a/.taplo.toml
+++ b/.taplo.toml
@@ -1,24 +1,24 @@
 include = ["**/*.toml", "**/Cargo.toml", "Cargo.toml"]
 [formatting]
-  align_comments      = true
-  align_entries       = true
-  allowed_blank_lines = 1
-  indent_entries      = false
-  reorder_arrays      = false
-  reorder_keys        = true
-  trailing_newline    = true
+align_comments      = true
+align_entries       = true
+allowed_blank_lines = 1
+indent_entries      = false
+reorder_arrays      = false
+reorder_keys        = true
+trailing_newline    = true
 
 [[rule]]
-  formatting.align_entries = true
-  formatting.array_auto_expand = false
-  formatting.reorder_arrays = true
-  formatting.reorder_keys = true
-  include = ["Cargo.toml", "**/Cargo.toml"]
-  keys = [
-    "dependencies",
-    "dev-dependencies",
-    "build-dependencies",
-    "workspace.dependencies",
-    "workspace.dev-dependencies",
-    "workspace.build-dependencies",
-  ]
+formatting.align_entries = true
+formatting.array_auto_expand = false
+formatting.reorder_arrays = true
+formatting.reorder_keys = true
+include = ["Cargo.toml", "**/Cargo.toml"]
+keys = [
+  "dependencies",
+  "dev-dependencies",
+  "build-dependencies",
+  "workspace.dependencies",
+  "workspace.dev-dependencies",
+  "workspace.build-dependencies",
+]