diff --git a/Cargo.lock b/Cargo.lock
index 005a415a..c7ff083c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -228,9 +228,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes"
-version = "1.5.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2bd12c1caf447e69cd4528f47f94d203fd2582878ecb9e9465484c4148a8223"
+checksum = "8318a53db07bb3f8dca91a600466bdb3f2eaadeedfdbcf02e1accbad9271ba50"
 
 [[package]]
 name = "cc"
@@ -829,9 +829,9 @@ dependencies = [
 
 [[package]]
 name = "googletest"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee44a233e2e661240ef77ed5de92ea9ecf70d4832963a8582a6681e1517f3673"
+checksum = "22e38fa267f4db1a2fa51795ea4234eaadc3617a97486a9f158de9256672260e"
 dependencies = [
  "googletest_macro",
  "num-traits",
@@ -841,9 +841,9 @@ dependencies = [
 
 [[package]]
 name = "googletest_macro"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed3057b7d1e628480193188ccb1a7850d034a3add3a350f4ed921b48e287ada9"
+checksum = "171deab504ad43a9ea80324a3686a0cbe9436220d9d0b48ae4d7f7bd303b48a9"
 dependencies = [
  "quote",
  "syn 2.0.48",
@@ -933,9 +933,9 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.3.3"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
+checksum = "d231dfb89cfffdbc30e7fc41579ed6066ad03abda9e567ccafae602b97ec5024"
 
 [[package]]
 name = "html5ever"
@@ -1486,6 +1486,18 @@ dependencies = [
  "windows-sys 0.48.0",
 ]
 
+[[package]]
+name = "mio"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4569e456d394deccd22ce1c1913e6ea0e54519f577285001215d33557431afe4"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "wasi",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "mockall"
 version = "0.13.0"
@@ -1563,7 +1575,7 @@ dependencies = [
  "kqueue",
  "libc",
  "log",
- "mio",
+ "mio 0.8.11",
  "walkdir",
  "windows-sys 0.48.0",
 ]
@@ -1588,16 +1600,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "num_cpus"
-version = "1.16.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43"
-dependencies = [
- "hermit-abi",
- "libc",
-]
-
 [[package]]
 name = "object"
 version = "0.32.1"
@@ -2547,12 +2549,13 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.10.1"
+version = "3.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
+checksum = "b8fcd239983515c23a32fb82099f97d0b11b8c72f654ed659363a95c3dad7a53"
 dependencies = [
  "cfg-if",
  "fastrand",
+ "once_cell",
  "rustix",
  "windows-sys 0.52.0",
 ]
@@ -2634,28 +2637,27 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.38.1"
+version = "1.39.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb2caba9f80616f438e09748d5acda951967e1ea58508ef53d9c6402485a46df"
+checksum = "daa4fb1bc778bd6f04cbfc4bb2d06a7396a8f299dc33ea1900cedaa316f467b1"
 dependencies = [
  "backtrace",
  "bytes",
  "libc",
- "mio",
- "num_cpus",
+ "mio 1.0.1",
  "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
  "socket2",
  "tokio-macros",
- "windows-sys 0.48.0",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "tokio-macros"
-version = "2.3.0"
+version = "2.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f5ae998a069d4b5aba8ee9dad856af7d520c3699e6159b185c2acd48155d39a"
+checksum = "693d596312e88961bc67d7f1f97af8a70227d9f90c31bba5806eec004978d752"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2722,9 +2724,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-websockets"
-version = "0.8.3"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "842e11addde61da7c37ef205cd625ebcd7b607076ea62e4698f06bfd5fd01a03"
+checksum = "3bf97fe79127ca4fc3a0fa4dc0fb63589fc9e79fbc75aedeae53afae7f38777d"
 dependencies = [
  "base64 0.22.0",
  "bytes",
diff --git a/src/concurrency/async-exercises/chat-async/Cargo.toml b/src/concurrency/async-exercises/chat-async/Cargo.toml
index ca4ded5b..dc02a861 100644
--- a/src/concurrency/async-exercises/chat-async/Cargo.toml
+++ b/src/concurrency/async-exercises/chat-async/Cargo.toml
@@ -6,5 +6,5 @@ edition = "2021"
 [dependencies]
 futures-util = { version = "0.3.30", features = ["sink"] }
 http = "1.1.0"
-tokio = { version = "1.38.1", features = ["full"] }
-tokio-websockets = { version = "0.8.3", features = ["client", "fastrand", "server", "sha1_smol"] }
+tokio = { version = "1.39.2", features = ["full"] }
+tokio-websockets = { version = "0.9.0", features = ["client", "fastrand", "server", "sha1_smol"] }
diff --git a/src/concurrency/sync-exercises/Cargo.toml b/src/concurrency/sync-exercises/Cargo.toml
index edc76a2d..be9df23a 100644
--- a/src/concurrency/sync-exercises/Cargo.toml
+++ b/src/concurrency/sync-exercises/Cargo.toml
@@ -18,4 +18,4 @@ scraper = "0.19.1"
 thiserror = "1.0.63"
 
 [dev-dependencies]
-tempfile = "3.10.1"
+tempfile = "3.11.0"