diff --git a/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.lock b/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.lock
index 5901800..f414091 100644
--- a/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.lock
+++ b/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.lock
@@ -32,6 +32,12 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "bitflags"
+version = "2.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
+
 [[package]]
 name = "bytes"
 version = "1.10.1"
@@ -50,6 +56,17 @@ version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
 
+[[package]]
+name = "io-uring"
+version = "0.7.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d93587f37623a1a17d94ef2bc9ada592f5465fe7732084ab7beefabe5c77c0c4"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.174"
@@ -121,6 +138,12 @@ version = "0.1.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "989e6739f80c4ad5b13e0fd7fe89531180375b18520cc8c82080e4dc4035b84f"
 
+[[package]]
+name = "slab"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04dc19736151f35336d325007ac991178d504a119863a2fcb3758cdb5e52c50d"
+
 [[package]]
 name = "socket2"
 version = "0.5.10"
@@ -151,15 +174,17 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.45.1"
+version = "1.46.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75ef51a33ef1da925cea3e4eb122833cb377c61439ca401b770f54902b806779"
+checksum = "0cc3a2344dafbe23a245241fe8b09735b521110d30fcefbbd5feb1797ca35d17"
 dependencies = [
  "backtrace",
  "bytes",
+ "io-uring",
  "libc",
  "mio",
  "pin-project-lite",
+ "slab",
  "socket2",
  "tokio-macros",
  "windows-sys 0.52.0",
diff --git a/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.toml b/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.toml
index cb799c8..34041f5 100644
--- a/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.toml
+++ b/exercises/4-multitasking/3-asynchronous-multitasking/0-sync-to-async/Cargo.toml
@@ -6,4 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-tokio = { version = "1.37.0", features = ["net", "io-util", "macros", "rt-multi-thread"] }
+tokio = { version = "1.46.1", features = ["net", "io-util", "macros", "rt-multi-thread"] }