diff --git a/Cargo.lock b/Cargo.lock
index b2a95cde..d307b6cc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3117,9 +3117,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.21.2"
+version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2806eaa3524762875e21c3dcd057bc4b7bfa01ce4da8d46be1cd43649e1cc6b"
+checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 dependencies = [
  "critical-section",
  "portable-atomic",
diff --git a/crates/bin/Cargo.toml b/crates/bin/Cargo.toml
index 97f8e960..92f88d95 100644
--- a/crates/bin/Cargo.toml
+++ b/crates/bin/Cargo.toml
@@ -34,7 +34,7 @@ home = "0.5.9"
 log = { version = "0.4.22", features = ["std"] }
 miette = "7.0.0"
 mimalloc = { version = "0.1.39", default-features = false, optional = true }
-once_cell = "1.18.0"
+once_cell = "1.21.3"
 semver = "1.0.17"
 strum = "0.27.0"
 strum_macros = "0.27.0"
diff --git a/crates/binstalk-downloader/Cargo.toml b/crates/binstalk-downloader/Cargo.toml
index 20a71b8b..5a66b19c 100644
--- a/crates/binstalk-downloader/Cargo.toml
+++ b/crates/binstalk-downloader/Cargo.toml
@@ -66,7 +66,7 @@ tracing = "0.1.39"
 hickory-resolver = { version = "0.25.1", optional = true, features = [
     "dnssec-ring",
 ] }
-once_cell = { version = "1.18.0", optional = true }
+once_cell = { version = "1.21.3", optional = true }
 url = "2.5.4"
 
 xz2 = "0.1.7"
diff --git a/crates/binstalk-fetchers/Cargo.toml b/crates/binstalk-fetchers/Cargo.toml
index 8da104e5..eeb3bade 100644
--- a/crates/binstalk-fetchers/Cargo.toml
+++ b/crates/binstalk-fetchers/Cargo.toml
@@ -23,7 +23,7 @@ leon = "3.0.0"
 leon-macros = "1.0.1"
 miette = "7.0.0"
 minisign-verify = "0.2.1"
-once_cell = "1.18.0"
+once_cell = "1.21.3"
 strum = "0.27.0"
 thiserror = "2.0.11"
 tokio = { version = "1.44.0", features = [
diff --git a/crates/binstalk-registry/Cargo.toml b/crates/binstalk-registry/Cargo.toml
index def687fe..540c66fe 100644
--- a/crates/binstalk-registry/Cargo.toml
+++ b/crates/binstalk-registry/Cargo.toml
@@ -22,7 +22,7 @@ compact_str = { version = "0.9.0", features = ["serde"] }
 leon = "3.0.0"
 miette = "7.0.0"
 normalize-path = { version = "0.2.1", path = "../normalize-path" }
-once_cell = "1.18.0"
+once_cell = "1.21.3"
 semver = { version = "1.0.17", features = ["serde"] }
 serde = { version = "1.0.163", features = ["derive"] }
 serde_json = "1.0.107"
diff --git a/crates/binstalk-types/Cargo.toml b/crates/binstalk-types/Cargo.toml
index 70f83f2e..ef7a88cb 100644
--- a/crates/binstalk-types/Cargo.toml
+++ b/crates/binstalk-types/Cargo.toml
@@ -12,7 +12,7 @@ license = "Apache-2.0 OR MIT"
 [dependencies]
 compact_str = { version = "0.9.0", features = ["serde"] }
 maybe-owned = { version = "0.3.4", features = ["serde"] }
-once_cell = "1.18.0"
+once_cell = "1.21.3"
 semver = { version = "1.0.17", features = ["serde"] }
 serde = { version = "1.0.163", features = ["derive"] }
 strum = "0.27.0"