diff --git a/Cargo.lock b/Cargo.lock
index e9a65bd2..93803fd9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2893,9 +2893,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.10.0"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
+checksum = "7b10983b38c53aebdf33f542c6275b0f58a238129d00c4ae0e6fb59738d783ca"
 
 [[package]]
 name = "oorandom"
diff --git a/zebra-consensus/Cargo.toml b/zebra-consensus/Cargo.toml
index a45e649f..7271eca4 100644
--- a/zebra-consensus/Cargo.toml
+++ b/zebra-consensus/Cargo.toml
@@ -22,7 +22,7 @@ chrono = "0.4.19"
 dirs = "4.0.0"
 displaydoc = "0.2.3"
 lazy_static = "1.4.0"
-once_cell = "1.10.0"
+once_cell = "1.11.0"
 serde = { version = "1.0.137", features = ["serde_derive"] }
 
 futures = "0.3.21"
diff --git a/zebra-state/Cargo.toml b/zebra-state/Cargo.toml
index d14c9556..6408ff47 100644
--- a/zebra-state/Cargo.toml
+++ b/zebra-state/Cargo.toml
@@ -36,7 +36,7 @@ zebra-test = { path = "../zebra-test/", optional = true }
 
 [dev-dependencies]
 color-eyre = "0.6.0"
-once_cell = "1.10.0"
+once_cell = "1.11.0"
 spandoc = "0.2.2"
 
 hex = { version = "0.4.3", features = ["serde"] }
diff --git a/zebra-test/Cargo.toml b/zebra-test/Cargo.toml
index 3cd94f99..bf1e95c0 100644
--- a/zebra-test/Cargo.toml
+++ b/zebra-test/Cargo.toml
@@ -13,7 +13,7 @@ indexmap = "1.8.1"
 lazy_static = "1.4.0"
 insta = "1.14.0"
 proptest = "0.10.1"
-once_cell = "1.10.0"
+once_cell = "1.11.0"
 rand = { version = "0.8.5", package = "rand" }
 regex = "1.5.5"
 
diff --git a/zebrad/Cargo.toml b/zebrad/Cargo.toml
index 6df88806..b547dae6 100644
--- a/zebrad/Cargo.toml
+++ b/zebrad/Cargo.toml
@@ -88,7 +88,7 @@ tonic-build = { version = "0.7.2", optional = true }
 [dev-dependencies]
 abscissa_core = { version = "0.5", features = ["testing"] }
 hex = "0.4.3"
-once_cell = "1.10.0"
+once_cell = "1.11.0"
 regex = "1.5.5"
 reqwest = "0.11"
 semver = "1.0.9"