diff --git a/Cargo.lock b/Cargo.lock
index 374d5e5..215527e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -34,9 +34,9 @@ checksum = "365861702868e2a37b4247aaecc7bd8f4389baec8d025497ad8ba7ff37ee9440"
 
 [[package]]
 name = "conquer-once"
-version = "0.3.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c6d3a9775a69f6d1fe2cc888999b67ed30257d3da4d2af91984e722f2ec918a"
+checksum = "5d008a441c0f269f36ca13712528069a86a3e60dffee1d98b976eb3b0b2160b4"
 dependencies = [
  "conquer-util",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index ccea014..f659250 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ pic8259 = "0.11.0"
 pc-keyboard = "0.5.0"
 linked_list_allocator = "0.9.0"
 crossbeam-queue = {version = "0.3.11", default-features = false, features = ["alloc"] }
-conquer-once = {version = "0.3.0", default-features = false}
+conquer-once = {version = "0.4.0", default-features = false}
 futures-util = {version = "0.3.4", default-features = false, features = ["alloc"] }