diff --git a/Cargo.lock b/Cargo.lock
index c623624220..4b33bc5f49 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -794,7 +794,6 @@ dependencies = [
  "anstyle",
  "bitflags 1.3.2",
  "clap_lex 0.4.1",
- "once_cell",
  "strsim",
 ]
 
@@ -1994,9 +1993,9 @@ dependencies = [
 
 [[package]]
 name = "icu_datagen"
-version = "1.2.3"
+version = "1.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c20e7886449669257f4dfdad042b939a1a32ad618902a6b83936f7d9f7e8146"
+checksum = "4a9468f8e941739ba87b9b38e2f92bc88e5ee96d777ced1c769c5230032a53d5"
 dependencies = [
  "cached-path",
  "clap 4.2.4",
diff --git a/boa_icu_provider/Cargo.toml b/boa_icu_provider/Cargo.toml
index 9980e2f816..6787fa66b6 100644
--- a/boa_icu_provider/Cargo.toml
+++ b/boa_icu_provider/Cargo.toml
@@ -19,7 +19,7 @@ icu_normalizer = "1.2.0"
 icu_properties = "1.2.0"
 zerovec = "0.9.4"
 
-icu_datagen = { version = "1.2.3", optional = true }
+icu_datagen = { version = "1.2.4", optional = true }
 icu_provider_blob = { version = "1.2.0", optional = true }
 icu_provider_adapters = { version = "1.2.0", features = ["serde"], optional = true }
 once_cell = { version = "1.17.1", default-features = false, features = [