diff --git a/Cargo.lock b/Cargo.lock
index 50ec99d8a764..4703ebfeecc6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1228,7 +1228,7 @@ dependencies = [
  "once_cell",
  "opener",
  "pathdiff",
- "pulldown-cmark",
+ "pulldown-cmark 0.9.6",
  "regex",
  "serde",
  "serde_json",
@@ -1265,7 +1265,7 @@ dependencies = [
  "log",
  "mdbook",
  "pretty_env_logger",
- "pulldown-cmark",
+ "pulldown-cmark 0.10.0",
 ]
 
 [[package]]
@@ -1773,9 +1773,20 @@ dependencies = [
 
 [[package]]
 name = "pulldown-cmark"
-version = "0.9.5"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57206b407293d2bcd3af849ce869d52068623f19e1b5ff8e8778e3309439682b"
+dependencies = [
+ "bitflags 2.4.1",
+ "memchr",
+ "unicase",
+]
+
+[[package]]
+name = "pulldown-cmark"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80eb9f69aec5cd8828765a75f739383fbbe3e8b9d84370bde1cc90487700794a"
+checksum = "dce76ce678ffc8e5675b22aa1405de0b7037e2fdf8913fea40d1926c6fe1e6e7"
 dependencies = [
  "bitflags 2.4.1",
  "memchr",
@@ -2385,9 +2396,9 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.35.1"
+version = "1.36.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c89b4efa943be685f629b149f53829423f8f5531ea21249408e8e2f8671ec104"
+checksum = "61285f6515fa018fb2d1e46eb21223fff441ee8db5d0f1435e8ab4f5cdb80931"
 dependencies = [
  "backtrace",
  "bytes",
diff --git a/mdbook-exerciser/Cargo.toml b/mdbook-exerciser/Cargo.toml
index 06c92d767fb7..525ce2f495bc 100644
--- a/mdbook-exerciser/Cargo.toml
+++ b/mdbook-exerciser/Cargo.toml
@@ -12,4 +12,4 @@ anyhow = "1.0.79"
 log = "0.4.17"
 mdbook = "0.4.25"
 pretty_env_logger = "0.5.0"
-pulldown-cmark = { version = "0.9.5", default-features = false }
+pulldown-cmark = { version = "0.10.0", default-features = false }
diff --git a/mdbook-exerciser/src/lib.rs b/mdbook-exerciser/src/lib.rs
index 2d25c6919835..8f6040d675d0 100644
--- a/mdbook-exerciser/src/lib.rs
+++ b/mdbook-exerciser/src/lib.rs
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 use log::{info, trace};
-use pulldown_cmark::{Event, Parser, Tag};
+use pulldown_cmark::{Event, Parser, Tag, TagEnd};
 use std::fs::{create_dir_all, File};
 use std::io::Write;
 use std::path::Path;
@@ -61,8 +61,8 @@ pub fn process(output_directory: &Path, input_contents: &str) -> anyhow::Result<
                     output_file.write(text.as_bytes())?;
                 }
             }
-            Event::End(Tag::CodeBlock(x)) => {
-                info!("End   {:?}", x);
+            Event::End(TagEnd::CodeBlock) => {
+                info!("End");
                 current_file = None;
             }
             _ => {}
diff --git a/src/exercises/concurrency/chat-async/Cargo.toml b/src/exercises/concurrency/chat-async/Cargo.toml
index b7193b609462..ac3bbcaaca18 100644
--- a/src/exercises/concurrency/chat-async/Cargo.toml
+++ b/src/exercises/concurrency/chat-async/Cargo.toml
@@ -6,5 +6,5 @@ edition = "2021"
 [dependencies]
 futures-util = { version = "0.3.30", features = ["sink"] }
 http = "1.0.0"
-tokio = { version = "1.28.1", features = ["full"] }
+tokio = { version = "1.36.0", features = ["full"] }
 tokio-websockets = { version = "0.5.1", features = ["client", "fastrand", "server", "sha1_smol"] }
diff --git a/third_party/cxx/blobstore/src/main.rs b/third_party/cxx/blobstore/src/main.rs
index 6ccd0068d649..4aadd77b448b 100644
--- a/third_party/cxx/blobstore/src/main.rs
+++ b/third_party/cxx/blobstore/src/main.rs
@@ -36,9 +36,9 @@ mod ffi {
 
 /// An iterator over contiguous chunks of a discontiguous file object.
 ///
-/// Toy implementation uses a Vec<Vec<u8>> but in reality this might be iterating
-/// over some more complex Rust data structure like a rope, or maybe loading
-/// chunks lazily from somewhere.
+/// Toy implementation uses a Vec<Vec<u8>> but in reality this might be
+/// iterating over some more complex Rust data structure like a rope, or maybe
+/// loading chunks lazily from somewhere.
 pub struct MultiBuf {
     chunks: Vec<Vec<u8>>,
     pos: usize,
diff --git a/third_party/rust-on-exercism/health-statistics.rs b/third_party/rust-on-exercism/health-statistics.rs
index e94c097229bd..52ab7ebb72e9 100644
--- a/third_party/rust-on-exercism/health-statistics.rs
+++ b/third_party/rust-on-exercism/health-statistics.rs
@@ -24,13 +24,7 @@ pub struct HealthReport<'a> {
 
 impl User {
     pub fn new(name: String, age: u32, height: f32) -> Self {
-        Self {
-            name,
-            age,
-            height,
-            visit_count: 0,
-            last_blood_pressure: None,
-        }
+        Self { name, age, height, visit_count: 0, last_blood_pressure: None }
     }
     // ANCHOR_END: setup
 
@@ -68,18 +62,14 @@ fn main() {
 fn test_visit() {
     let mut bob = User::new(String::from("Bob"), 32, 155.2);
     assert_eq!(bob.visit_count, 0);
-    let report = bob.visit_doctor(Measurements {
-        height: 156.1,
-        blood_pressure: (120, 80),
-    });
+    let report =
+        bob.visit_doctor(Measurements { height: 156.1, blood_pressure: (120, 80) });
     assert_eq!(report.patient_name, "Bob");
     assert_eq!(report.visit_count, 1);
     assert_eq!(report.blood_pressure_change, None);
 
-    let report = bob.visit_doctor(Measurements {
-        height: 156.1,
-        blood_pressure: (115, 76),
-    });
+    let report =
+        bob.visit_doctor(Measurements { height: 156.1, blood_pressure: (115, 76) });
 
     assert_eq!(report.visit_count, 2);
     assert_eq!(report.blood_pressure_change, Some((-5, -4)));