diff --git a/Cargo.lock b/Cargo.lock
index 3ad5859a..635d5fd1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1863,9 +1863,9 @@ checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
 name = "tokio"
-version = "1.20.1"
+version = "1.20.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a8325f63a7d4774dd041e363b2409ed1c5cbbd0f867795e661df066b2b0a581"
+checksum = "eb78f30e4b41e98ca4cce5acb51168a033839a7af9e42b380355808e14e98ee0"
 dependencies = [
  "autocfg",
  "bytes",
@@ -1873,7 +1873,6 @@ dependencies = [
  "memchr",
  "mio",
  "num_cpus",
- "once_cell",
  "pin-project-lite",
  "socket2",
  "tokio-macros",
diff --git a/test/replica/Cargo.toml b/test/replica/Cargo.toml
index c464ca33..7bbc105b 100644
--- a/test/replica/Cargo.toml
+++ b/test/replica/Cargo.toml
@@ -11,4 +11,4 @@ ic-agent = "0.20"
 garcon = "0.2.3"
 reqwest = "0.11"
 tempfile = "3.3.0"
-tokio = "1.20.1"
\ No newline at end of file
+tokio = "1.20.4"
\ No newline at end of file
diff --git a/test/runner/Cargo.toml b/test/runner/Cargo.toml
index 2219d03e..766a60ab 100644
--- a/test/runner/Cargo.toml
+++ b/test/runner/Cargo.toml
@@ -14,4 +14,4 @@ ic-types = "0.4.0"
 ic-agent = "0.20.0"
 pico-args = "0.5"
 reqwest = "0.11"
-tokio = { version = "1.20.1", features = ["macros"] }
+tokio = { version = "1.20.4", features = ["macros"] }