diff --git a/src/rust/Cargo.lock b/src/rust/Cargo.lock
index abe741fbc..fd7a9d5ab 100644
--- a/src/rust/Cargo.lock
+++ b/src/rust/Cargo.lock
@@ -1526,9 +1526,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.19.0"
+version = "1.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
+checksum = "33ea5043e58958ee56f3e15a90aee535795cd7dfd319846288d93c5b57d85cbe"
 
 [[package]]
 name = "openssl-probe"
diff --git a/src/rust/Cargo.toml b/src/rust/Cargo.toml
index 698233bd0..c6f16225c 100644
--- a/src/rust/Cargo.toml
+++ b/src/rust/Cargo.toml
@@ -43,7 +43,7 @@ extendr-api = { git = "https://github.com/extendr/extendr", rev = "1895bfc8ee223
 flume = "0.11.0"
 indenter = "0.3.3"
 ipc-channel = "0.18.1"
-once_cell = "1.19.0"
+once_cell = "1.20.0"
 rayon = "1.10.0"
 serde = { version = "1.0.210", features = ["derive"] }
 serde_json = "*"