diff --git a/Cargo.lock b/Cargo.lock
index e7e9c1e7..4b7bedce 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1604,9 +1604,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.17.2"
+version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9670a07f94779e00908f3e686eab508878ebb390ba6e604d3a284c00e8d0487b"
+checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
 
 [[package]]
 name = "parking_lot"
diff --git a/helix-core/Cargo.toml b/helix-core/Cargo.toml
index e9e18aa3..1b3d75eb 100644
--- a/helix-core/Cargo.toml
+++ b/helix-core/Cargo.toml
@@ -26,7 +26,7 @@ unicode-general-category = "0.6"
 # slab = "0.4.2"
 slotmap = "1.0"
 tree-sitter = "0.20"
-once_cell = "1.17"
+once_cell = "1.18"
 arc-swap = "1"
 regex = "1"
 bitflags = "2.3"
diff --git a/helix-loader/Cargo.toml b/helix-loader/Cargo.toml
index 18216bcb..b0d8f146 100644
--- a/helix-loader/Cargo.toml
+++ b/helix-loader/Cargo.toml
@@ -19,7 +19,7 @@ serde = { version = "1.0", features = ["derive"] }
 toml = "0.7"
 etcetera = "0.8"
 tree-sitter = "0.20"
-once_cell = "1.17"
+once_cell = "1.18"
 log = "0.4"
 
 # TODO: these two should be on !wasm32 only
diff --git a/helix-term/Cargo.toml b/helix-term/Cargo.toml
index 1c3543d3..e623e2de 100644
--- a/helix-term/Cargo.toml
+++ b/helix-term/Cargo.toml
@@ -31,7 +31,7 @@ helix-vcs = { version = "0.6", path = "../helix-vcs" }
 helix-loader = { version = "0.6", path = "../helix-loader" }
 
 anyhow = "1"
-once_cell = "1.17"
+once_cell = "1.18"
 
 which = "4.4"
 
diff --git a/helix-tui/Cargo.toml b/helix-tui/Cargo.toml
index 4cfeba86..32e8a52f 100644
--- a/helix-tui/Cargo.toml
+++ b/helix-tui/Cargo.toml
@@ -22,7 +22,7 @@ unicode-segmentation = "1.10"
 crossterm = { version = "0.26", optional = true }
 termini = "1.0"
 serde = { version = "1", "optional" = true, features = ["derive"]}
-once_cell = "1.17"
+once_cell = "1.18"
 log = "~0.4"
 helix-view = { version = "0.6", path = "../helix-view", features = ["term"] }
 helix-core = { version = "0.6", path = "../helix-core" }
diff --git a/helix-view/Cargo.toml b/helix-view/Cargo.toml
index 9ffef00e..203b5dad 100644
--- a/helix-view/Cargo.toml
+++ b/helix-view/Cargo.toml
@@ -24,7 +24,7 @@ crossterm = { version = "0.26", optional = true }
 helix-vcs = { version = "0.6", path = "../helix-vcs" }
 
 # Conversion traits
-once_cell = "1.17"
+once_cell = "1.18"
 url = "2"
 
 arc-swap = { version = "1.6.0" }