diff --git a/Cargo.lock b/Cargo.lock
index b75ef7391..622d6f989 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -878,9 +878,9 @@ checksum = "67c21572b4949434e4fc1e1978b99c5f77064153c59d998bf13ecd96fb5ecba7"
 
 [[package]]
 name = "lalrpop-util"
-version = "0.19.7"
+version = "0.19.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6d265705249fe209280676d8f68887859fa42e1d34f342fc05bd47726a5e188"
+checksum = "bcf796c978e9b4d983414f4caedc9273aa33ee214c5b887bd55fde84c85d2dc4"
 
 [[package]]
 name = "lazy_static"
diff --git a/parser/Cargo.toml b/parser/Cargo.toml
index 1799f2bc4..bbc3b094d 100644
--- a/parser/Cargo.toml
+++ b/parser/Cargo.toml
@@ -14,7 +14,7 @@ phf_codegen = "0.10"
 
 [dependencies]
 rustpython-ast = { path = "../ast" }
-lalrpop-util = "0.19.7"
+lalrpop-util = "0.19.8"
 log = "0.4.16"
 num-bigint = "0.4.3"
 num-traits = "0.2.14"
diff --git a/parser/build.rs b/parser/build.rs
index d92a74b9f..6eac57807 100644
--- a/parser/build.rs
+++ b/parser/build.rs
@@ -90,20 +90,15 @@ fn try_lalrpop(source: &str, target: &str) -> Result<(), ExitCode> {
 }
 
 fn sha_equal(expected_sha3_str: &str, actual_sha3: &[u8; 32]) -> bool {
-    // stupid stupid stupid hack. lalrpop outputs each byte as "{:x}" instead of "{:02x}"
-    if expected_sha3_str.len() == 64 {
-        let mut expected_sha3 = [0u8; 32];
-        for (i, b) in expected_sha3.iter_mut().enumerate() {
-            *b = u8::from_str_radix(&expected_sha3_str[i * 2..][..2], 16).unwrap();
-        }
-        *actual_sha3 == expected_sha3
-    } else {
-        let mut actual_sha3_str = String::new();
-        for byte in actual_sha3 {
-            write!(actual_sha3_str, "{byte:x}").unwrap();
-        }
-        actual_sha3_str == expected_sha3_str
+    if expected_sha3_str.len() != 64 {
+        panic!("lalrpop version? hash bug is fixed in 0.19.8");
     }
+
+    let mut expected_sha3 = [0u8; 32];
+    for (i, b) in expected_sha3.iter_mut().enumerate() {
+        *b = u8::from_str_radix(&expected_sha3_str[i * 2..][..2], 16).unwrap();
+    }
+    *actual_sha3 == expected_sha3
 }
 
 fn gen_phf() {