diff --git a/languages.toml b/languages.toml
index 3e4084bf43c1..1653fbbcdf89 100644
--- a/languages.toml
+++ b/languages.toml
@@ -1795,7 +1795,7 @@ auto-format = true
 
 [[grammar]]
 name = "gleam"
-source = { git = "https://github.com/gleam-lang/tree-sitter-gleam", rev = "b2afa4fd6bb41a7bf912b034c653c90af7ae5122" }
+source = { git = "https://github.com/gleam-lang/tree-sitter-gleam", rev = "bcf9c45b56cbe46e9dac5eee0aee75df270000ac" }
 
 [[language]]
 name = "ron"
diff --git a/runtime/queries/gleam/highlights.scm b/runtime/queries/gleam/highlights.scm
index 95a08141bd51..b40574b04fc2 100644
--- a/runtime/queries/gleam/highlights.scm
+++ b/runtime/queries/gleam/highlights.scm
@@ -61,10 +61,17 @@
 
 ; Literals
 (string) @string
+((escape_sequence) @warning
+ (#eq? @warning "\\e")) ; deprecated escape sequence
+(escape_sequence) @constant.character.escape
 (bit_string_segment_option) @function.builtin
 (integer) @constant.numeric.integer
 (float) @constant.numeric.float
 
+; Reserved identifiers
+((identifier) @error
+ (#any-of? @error "auto" "delegate" "derive" "else" "implement" "macro" "test" "echo"))
+
 ; Variables
 (identifier) @variable
 (discard) @comment.unused