diff --git a/Cargo.lock b/Cargo.lock
index a8b97ff26f5f..a6bde3ddf78e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1195,9 +1195,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.0"
+version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dca26ee1f8d361640700bde38b2c37d8c22b3ce2d360e1fc1c74ea4b0aa7d775"
+checksum = "c2dd04ddaf88237dc3b8d8f9a3c1004b506b54b3313403944054d23c0870c521"
 dependencies = [
  "cfg-if 1.0.0",
  "crossbeam-utils",
diff --git a/common/workspace-hack/Cargo.toml b/common/workspace-hack/Cargo.toml
index 04424531ee81..f49eff371480 100644
--- a/common/workspace-hack/Cargo.toml
+++ b/common/workspace-hack/Cargo.toml
@@ -15,7 +15,7 @@ byteorder = { version = "1.4.2", features = ["default", "i128", "std"] }
 bytes = { version = "1.0.1", features = ["default", "serde", "std"] }
 chrono = { version = "0.4.19", features = ["clock", "default", "libc", "oldtime", "serde", "std", "time", "winapi"] }
 clap = { version = "2.33.3", features = ["ansi_term", "atty", "color", "default", "strsim", "suggestions", "vec_map"] }
-crossbeam-channel = { version = "0.5.0", features = ["crossbeam-utils", "default", "std"] }
+crossbeam-channel = { version = "0.5.6", features = ["crossbeam-utils", "default", "std"] }
 crossbeam-deque = { version = "0.8.0", features = ["crossbeam-epoch", "crossbeam-utils", "default", "std"] }
 crossbeam-utils = { version = "0.8.3", features = ["default", "lazy_static", "std"] }
 either = { version = "1.6.1", features = ["default", "use_std"] }
@@ -61,7 +61,7 @@ bytes = { version = "1.0.1", features = ["default", "serde", "std"] }
 cc = { version = "1.0.67", default-features = false, features = ["jobserver", "parallel"] }
 chrono = { version = "0.4.19", features = ["clock", "default", "libc", "oldtime", "serde", "std", "time", "winapi"] }
 clap = { version = "2.33.3", features = ["ansi_term", "atty", "color", "default", "strsim", "suggestions", "vec_map"] }
-crossbeam-channel = { version = "0.5.0", features = ["crossbeam-utils", "default", "std"] }
+crossbeam-channel = { version = "0.5.6", features = ["crossbeam-utils", "default", "std"] }
 crossbeam-deque = { version = "0.8.0", features = ["crossbeam-epoch", "crossbeam-utils", "default", "std"] }
 crossbeam-utils = { version = "0.8.3", features = ["default", "lazy_static", "std"] }
 either = { version = "1.6.1", features = ["default", "use_std"] }
@@ -110,7 +110,7 @@ byteorder = { version = "1.4.2", features = ["default", "i128", "std"] }
 bytes = { version = "1.0.1", features = ["default", "serde", "std"] }
 chrono = { version = "0.4.19", features = ["clock", "default", "libc", "oldtime", "serde", "std", "time", "winapi"] }
 clap = { version = "2.33.3", features = ["ansi_term", "atty", "color", "default", "strsim", "suggestions", "vec_map"] }
-crossbeam-channel = { version = "0.5.0", features = ["crossbeam-utils", "default", "std"] }
+crossbeam-channel = { version = "0.5.6", features = ["crossbeam-utils", "default", "std"] }
 crossbeam-deque = { version = "0.8.0", features = ["crossbeam-epoch", "crossbeam-utils", "default", "std"] }
 crossbeam-utils = { version = "0.8.3", features = ["default", "lazy_static", "std"] }
 either = { version = "1.6.1", features = ["default", "use_std"] }
@@ -156,7 +156,7 @@ bytes = { version = "1.0.1", features = ["default", "serde", "std"] }
 cc = { version = "1.0.67", default-features = false, features = ["jobserver", "parallel"] }
 chrono = { version = "0.4.19", features = ["clock", "default", "libc", "oldtime", "serde", "std", "time", "winapi"] }
 clap = { version = "2.33.3", features = ["ansi_term", "atty", "color", "default", "strsim", "suggestions", "vec_map"] }
-crossbeam-channel = { version = "0.5.0", features = ["crossbeam-utils", "default", "std"] }
+crossbeam-channel = { version = "0.5.6", features = ["crossbeam-utils", "default", "std"] }
 crossbeam-deque = { version = "0.8.0", features = ["crossbeam-epoch", "crossbeam-utils", "default", "std"] }
 crossbeam-utils = { version = "0.8.3", features = ["default", "lazy_static", "std"] }
 either = { version = "1.6.1", features = ["default", "use_std"] }
diff --git a/language/testing-infra/test-generation/Cargo.toml b/language/testing-infra/test-generation/Cargo.toml
index f0985646a5ef..d1d76e02aa5c 100644
--- a/language/testing-infra/test-generation/Cargo.toml
+++ b/language/testing-infra/test-generation/Cargo.toml
@@ -17,7 +17,7 @@ structopt = "0.3.21"
 itertools = "0.10.0"
 hex = "0.4.3"
 getrandom = "0.2.2"
-crossbeam-channel = "0.5.0"
+crossbeam-channel = "0.5.6"
 
 bytecode-verifier = { path = "../../bytecode-verifier" }
 diem-config = { path = "../../../config" }