diff --git a/Cargo.lock b/Cargo.lock
index ef0bd5e3bce..64654c9961d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1832,9 +1832,9 @@ checksum = "0685c84d5d54d1c26f7d3eb96cd41550adb97baed141a761cf335d3d33bcd0ae"
 
 [[package]]
 name = "ungrammar"
-version = "1.14.9"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66be59c2fd880e3d76d1a6cf6d34114008f1d8af2748d4ad9d39ea712f14fda9"
+checksum = "ed01567101450f7d600508e7680df6005ae4fe97119d79b0364cc5910ff39732"
 
 [[package]]
 name = "unicase"
diff --git a/crates/syntax/Cargo.toml b/crates/syntax/Cargo.toml
index 43c1f2fa80b..f59cd4f257c 100644
--- a/crates/syntax/Cargo.toml
+++ b/crates/syntax/Cargo.toml
@@ -30,7 +30,7 @@ rayon = "1"
 expect-test = "1.2.0-pre.1"
 proc-macro2 = "1.0.8"
 quote = "1.0.2"
-ungrammar = "=1.14.9"
+ungrammar = "=1.15.0"
 
 test_utils = { path = "../test_utils" }
 sourcegen = { path = "../sourcegen" }