diff --git a/.github/workflows/weekly.yml b/.github/workflows/weekly.yml
index f6f5cc59a..0e34792a2 100644
--- a/.github/workflows/weekly.yml
+++ b/.github/workflows/weekly.yml
@@ -24,6 +24,18 @@ jobs:
       - name: Build Docker image
         id: build-docker-image
         run: cargo xtask build-docker-image -v --no-cache --no-output --from-ci --no-fastfail --tag weekly
+        timeout-minutes: 1440
+  wiki:
+    name: Ensure wiki is valid
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./.github/actions/setup-rust
+      - run: git clone ${wikirepo}
+        shell: bash
+        env:
+          wikirepo: https://github.com/${{ github.repository }}.wiki.git
+      - run: cargo test toml_check -- --nocapture
   cargo-deny:
     runs-on: ubuntu-latest
     steps:
diff --git a/README.md b/README.md
index e1d7c95ef..6f8a690b2 100644
--- a/README.md
+++ b/README.md
@@ -91,7 +91,7 @@ You have three options to configure `cross`. All of these options use the TOML f
 You can directly set [configuration values](docs/cross_toml.md) in your `Cargo.toml` file, under the `[package.metadata.cross]` table, i.e. key prefix.
 An example config snippet would look like this:
 
-```
+```toml,cargo
 [package.metadata.cross.target.aarch64-unknown-linux-gnu]
 xargo = false
 image = "test-image"
diff --git a/src/tests/toml.rs b/src/tests/toml.rs
index 45017553d..e8cd68f9d 100644
--- a/src/tests/toml.rs
+++ b/src/tests/toml.rs
@@ -3,8 +3,10 @@ use std::io::Read;
 use once_cell::sync::Lazy;
 use regex::{Regex, RegexBuilder};
 
+use crate::ToUtf8;
+
 static TOML_REGEX: Lazy<Regex> = Lazy::new(|| {
-    RegexBuilder::new(r#"```toml\n(.*?)```"#)
+    RegexBuilder::new(r#"```toml(.*?)\n(.*?)```"#)
         .multi_line(true)
         .dot_matches_new_line(true)
         .build()
@@ -35,16 +37,40 @@ fn toml_check() -> Result<(), Box<dyn std::error::Error>> {
         let mut contents = String::new();
         file.read_to_string(&mut contents).unwrap();
         for matches in TOML_REGEX.captures_iter(&contents) {
-            let fence = matches.get(1).unwrap();
+            let cargo = {
+                let t = matches.get(1).unwrap().as_str();
+                if t.is_empty() {
+                    false
+                } else if t == ",cargo" {
+                    true
+                } else {
+                    println!("skipping {t}");
+                    continue;
+                }
+            };
+            let fence = matches.get(2).unwrap();
+            let fence_content = fence
+                .as_str()
+                .replace("$TARGET", "x86_64-unknown-linux-gnu")
+                .replace("${target}", "x86_64-unknown-linux-gnu");
+
             eprintln!(
-                "testing snippet at: {:?}:{:?}",
-                dir_entry.path(),
+                "testing snippet at: {}:{:?}",
+                dir_entry.path().to_utf8()?,
                 text_line_no(&contents, fence.range().start),
             );
-            assert!(crate::cross_toml::CrossToml::parse_from_cross(
-                fence.as_str(),
-                crate::shell::MessageInfo::default()
-            )?
+            assert!(if !cargo {
+                crate::cross_toml::CrossToml::parse_from_cross(
+                    &fence_content,
+                    crate::shell::MessageInfo::default(),
+                )?
+            } else {
+                crate::cross_toml::CrossToml::parse_from_cargo(
+                    &fence_content,
+                    crate::shell::MessageInfo::default(),
+                )?
+                .unwrap_or_default()
+            }
             .1
             .is_empty());
         }