diff --git a/Cargo.lock b/Cargo.lock
index f3de585..8521083 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1366,9 +1366,9 @@ dependencies = [
 
 [[package]]
 name = "lalrpop"
-version = "0.19.12"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a1cbf952127589f2851ab2046af368fd20645491bb4b376f04b7f94d7a9837b"
+checksum = "da4081d44f4611b66c6dd725e6de3169f9f63905421e8626fcb86b6a898998b8"
 dependencies = [
  "ascii-canvas",
  "bit-set",
@@ -1378,8 +1378,9 @@ dependencies = [
  "itertools 0.10.5",
  "lalrpop-util",
  "petgraph",
+ "pico-args",
  "regex",
- "regex-syntax 0.6.29",
+ "regex-syntax 0.7.5",
  "string_cache",
  "term",
  "tiny-keccak",
@@ -1388,9 +1389,9 @@ dependencies = [
 
 [[package]]
 name = "lalrpop-util"
-version = "0.19.12"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3c48237b9604c5a4702de6b824e02006c3214327564636aef27c1028a8fa0ed"
+checksum = "3f35c735096c0293d313e8f2a641627472b83d01b937177fe76e5e2708d31e0d"
 dependencies = [
  "regex",
 ]
@@ -1733,6 +1734,12 @@ dependencies = [
  "siphasher",
 ]
 
+[[package]]
+name = "pico-args"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5be167a7af36ee22fe3115051bc51f6e6c7054c9348e28deb4f49bd6f705a315"
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.13"
@@ -1935,9 +1942,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.29"
+version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
+checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
 
 [[package]]
 name = "regex-syntax"
diff --git a/Cargo.toml b/Cargo.toml
index dd571cc..9803782 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,8 +26,8 @@ jaq-parse = "1.0.2"
 jaq-std = {version = "1.2.1", features = ["bincode"]}
 jaq-interpret = "1.2.1"
 jaq-syn = "1.1.0"
-lalrpop = "0.19.5"
-lalrpop-util = "0.19.5"
+lalrpop = { version = "0.20.0", features = ["unicode"] }
+lalrpop-util = { version = "0.20.0", features = ["unicode"] }
 libc = "0.2"
 log = "0.4"
 maplit = "1"
diff --git a/crates/simplexpr/src/error.rs b/crates/simplexpr/src/error.rs
index 92732b7..7e2bef3 100644
--- a/crates/simplexpr/src/error.rs
+++ b/crates/simplexpr/src/error.rs
@@ -18,7 +18,7 @@ impl Spanned for ParseError {
     fn span(&self) -> Span {
         match &self.source {
             lalrpop_util::ParseError::InvalidToken { location } => Span(*location, *location, self.file_id),
-            lalrpop_util::ParseError::UnrecognizedEOF { location, expected: _ } => Span(*location, *location, self.file_id),
+            lalrpop_util::ParseError::UnrecognizedEof { location, expected: _ } => Span(*location, *location, self.file_id),
             lalrpop_util::ParseError::UnrecognizedToken { token, expected: _ } => Span(token.0, token.2, self.file_id),
             lalrpop_util::ParseError::ExtraToken { token } => Span(token.0, token.2, self.file_id),
             lalrpop_util::ParseError::User { error: LexicalError(span) } => *span,
diff --git a/crates/yuck/src/error.rs b/crates/yuck/src/error.rs
index 9660503..e6bfac4 100644
--- a/crates/yuck/src/error.rs
+++ b/crates/yuck/src/error.rs
@@ -40,7 +40,7 @@ pub fn get_parse_error_span<T, E: Spanned>(file_id: usize, err: &lalrpop_util::P
     use lalrpop_util::ParseError::*;
     match err {
         InvalidToken { location } => Span(*location, *location, file_id),
-        UnrecognizedEOF { location, .. } => Span(*location, *location, file_id),
+        UnrecognizedEof { location, .. } => Span(*location, *location, file_id),
         UnrecognizedToken { token, .. } => Span(token.0, token.2, file_id),
         ExtraToken { token } => Span(token.0, token.2, file_id),
         User { error } => error.span(),
diff --git a/crates/yuck/src/format_diagnostic.rs b/crates/yuck/src/format_diagnostic.rs
index 9328dbb..114452b 100644
--- a/crates/yuck/src/format_diagnostic.rs
+++ b/crates/yuck/src/format_diagnostic.rs
@@ -163,7 +163,7 @@ pub fn lalrpop_error_to_diagnostic<T: std::fmt::Display, E: Spanned + ToDiagnost
     use lalrpop_util::ParseError::*;
     match error {
         InvalidToken { location } => gen_diagnostic!("Invalid token", Span::point(*location, file_id)),
-        UnrecognizedEOF { location, expected: _ } => gen_diagnostic! {
+        UnrecognizedEof { location, expected: _ } => gen_diagnostic! {
             msg = "Input ended unexpectedly. Check if you have any unclosed delimiters",
             label = Span::point(*location, file_id),
         },