diff --git a/Cargo.lock b/Cargo.lock
index 3c2da29..c705649 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -329,6 +329,25 @@ dependencies = [
  "zerocopy",
 ]
 
+[[package]]
+name = "include_dir"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "923d117408f1e49d914f1a379a309cffe4f18c05cf4e3d12e613a15fc81bd0dd"
+dependencies = [
+ "include_dir_macros",
+]
+
+[[package]]
+name = "include_dir_macros"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cab85a7ed0bd5f0e76d93846e0147172bed2e2d3f859bcc33a8d9699cad1a75"
+dependencies = [
+ "proc-macro2",
+ "quote",
+]
+
 [[package]]
 name = "itertools"
 version = "0.13.0"
@@ -451,6 +470,7 @@ dependencies = [
  "flate2",
  "generativity",
  "glob",
+ "include_dir",
  "libc",
  "pretty_assertions",
  "prettyplease",
diff --git a/Cargo.toml b/Cargo.toml
index b8b16ce..6f358ee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,9 +11,11 @@ repository = "https://github.com/pgdogdev/pg_raw_parse"
 # Enables compile-time checks to verify that our enums are actually layout
 # identical to the C structures we're casting from. Requires a nightly compiler
 field_offset_assertions = []
+postgres-regress = ["dep:include_dir"]
 
 [dependencies]
 generativity = "1.2.1"
+include_dir = { version = "0.7", optional = true }
 libc = "0.2.186"
 thiserror = "2.0.18"
 
diff --git a/libpg_query b/libpg_query
index aa71ad9..204fbdb 160000
--- a/libpg_query
+++ b/libpg_query
@@ -1 +1 @@
-Subproject commit aa71ad962b654c1d608c687232c047e48dba6452
+Subproject commit 204fbdbd3ed5f8691ab358e49f1fc5397b4679e2
diff --git a/src/lib.rs b/src/lib.rs
index 0ed0cdb..e97597a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -24,6 +24,10 @@ pub use crate::error::{Error, Result};
 pub use crate::node_enum::{Node, NodeMut};
 pub use crate::owned::Owned;
 
+#[cfg(feature = "postgres-regress")]
+pub static POSTGRES_REGRESS: include_dir::Dir<'static> =
+    include_dir::include_dir!("$CARGO_MANIFEST_DIR/libpg_query/test/sql/postgres_regress");
+
 /// PostgreSQL version number whose parser sources are used by this crate.
 pub const POSTGRES_VERSION_NUM: u32 = raw::PG_VERSION_NUM;