diff --git a/flake.lock b/flake.lock
index d876244..2bf8eae 100644
--- a/flake.lock
+++ b/flake.lock
@@ -527,17 +527,17 @@
     "hs-bindgen-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1773399083,
-        "narHash": "sha256-oF6E1/zRZ4iiZs9QjtQMvHnLMfq/W6CXOX44QbDGYXs=",
+        "lastModified": 1774599157,
+        "narHash": "sha256-jgV67xhWzxMwyiyy5RPtu+VQvGTt+FoMXCWJcZ7lczY=",
         "owner": "well-typed",
         "repo": "hs-bindgen",
-        "rev": "6ca94188abd756a1fb4dd8a4037de3fa7dca0765",
+        "rev": "3c4af10590d0d09e825a9735e9a03d7f60914e21",
         "type": "github"
       },
       "original": {
         "owner": "well-typed",
+        "ref": "release-0.1-alpha2",
         "repo": "hs-bindgen",
-        "rev": "6ca94188abd756a1fb4dd8a4037de3fa7dca0765",
         "type": "github"
       }
     },
@@ -561,17 +561,16 @@
     "libclang-src": {
       "flake": false,
       "locked": {
-        "lastModified": 1773221966,
-        "narHash": "sha256-VPG7jKdq2g/Hwf5cPiy4coAvLULxDeA4KHCVkNSSs5w=",
+        "lastModified": 1774600891,
+        "narHash": "sha256-LTAyNMY4Vu0vPeEq2wXB0KWY4kGtqtHTRmADjLdkv78=",
         "owner": "well-typed",
         "repo": "libclang",
-        "rev": "d6e482df49b88375cf3075928a78ee86c2a068d4",
+        "rev": "1054474fae403bfb52c7919680cac03d3d3d4237",
         "type": "github"
       },
       "original": {
         "owner": "well-typed",
         "repo": "libclang",
-        "rev": "d6e482df49b88375cf3075928a78ee86c2a068d4",
         "type": "github"
       }
     },
diff --git a/flake.nix b/flake.nix
index d6c8926..0b7bf68 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,8 +3,8 @@
     nix-haskell.url = "github:reflex-frp/nix-haskell";
     nixpkgs.follows = "nix-haskell/nixpkgs";
     hls-src = { url = "github:haskell/haskell-language-server/2.13.0.0"; flake = false; };
-    hs-bindgen-src = { url = "github:well-typed/hs-bindgen/6ca94188abd756a1fb4dd8a4037de3fa7dca0765"; flake = false; };
-    libclang-src = { url = "github:well-typed/libclang/d6e482df49b88375cf3075928a78ee86c2a068d4"; flake = false; };
+    hs-bindgen-src = { url = "github:well-typed/hs-bindgen/release-0.1-alpha2"; flake = false; };
+    libclang-src = { url = "github:well-typed/libclang"; flake = false; };
     flake-utils.url = "github:numtide/flake-utils";
     crane.url = "github:ipetkov/crane";
     rust-overlay = {
diff --git a/garnet.cabal b/garnet.cabal
index c10f382..00decef 100644
--- a/garnet.cabal
+++ b/garnet.cabal
@@ -46,7 +46,6 @@ library
         base,
         hs-bindgen,
         hs-bindgen-runtime,
-        primitive,
         template-haskell,
 
 executable garnet
diff --git a/lib/GarnetRs/Raw.hs b/lib/GarnetRs/Raw.hs
index 98b15ad..61312fa 100644
--- a/lib/GarnetRs/Raw.hs
+++ b/lib/GarnetRs/Raw.hs
@@ -1,6 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
 {-# LANGUAGE DerivingVia #-}
-{-# LANGUAGE FieldSelectors #-}
 {-# LANGUAGE MagicHash #-}
 {-# LANGUAGE PatternSynonyms #-}
 {-# LANGUAGE TemplateHaskell #-}
@@ -42,7 +41,7 @@ do
     withHsBindgen
         def
             { clang = def{extraIncludeDirs = Pkg "rust/target/debug" : systemDirs}
-            , fieldNamingStrategy = EnableRecordDot
+            , fieldNamingStrategy = OmitFieldPrefixes
             }
         def
         $ hashInclude "garnet_rs.h"
diff --git a/lib/GarnetRs/Wrapped.hs b/lib/GarnetRs/Wrapped.hs
index 4ad72c2..51d9255 100644
--- a/lib/GarnetRs/Wrapped.hs
+++ b/lib/GarnetRs/Wrapped.hs
@@ -34,8 +34,8 @@ data Shape
     | Rectangle CDouble CDouble
 convertShape :: Shape -> Raw.Shape
 convertShape = \case
-    Circle r -> Raw.Shape Raw.Circle $ Raw.set_shape_body_circle $ Raw.Circle_Body r
-    Rectangle w h -> Raw.Shape Raw.Rectangle $ Raw.set_shape_body_rectangle $ Raw.Rectangle_Body w h
+    Circle r -> Raw.Shape Raw.Circle $ Raw.set_shape_circle_circle $ Raw.Circle_Body r
+    Rectangle w h -> Raw.Shape Raw.Rectangle $ Raw.set_shape_circle_rectangle $ Raw.Rectangle_Body w h
 
 data BTree a
     = Leaf a
@@ -43,14 +43,14 @@ data BTree a
 withBTree :: BTree Int64 -> (Raw.BTreeC -> IO a) -> IO a
 withBTree =
     runContT . fix \f -> \case
-        Leaf v -> pure $ Raw.BTreeC Raw.Leaf $ Raw.set_bTreeC_body_leaf $ Raw.Leaf_Body v
+        Leaf v -> pure $ Raw.BTreeC Raw.Leaf $ Raw.set_bTreeC_leaf_leaf $ Raw.Leaf_Body v
         Fork l r -> do
             lRaw <- f l
             rRaw <- f r
             lPtr <- ContT alloca
             rPtr <- ContT alloca
             lift $ poke lPtr lRaw >> poke rPtr rRaw
-            pure . Raw.BTreeC Raw.Fork . Raw.set_bTreeC_body_fork $
+            pure . Raw.BTreeC Raw.Fork . Raw.set_bTreeC_leaf_fork $
                 Raw.Fork_Body (unsafeFromPtr lPtr) (unsafeFromPtr rPtr)
 
 hello :: ByteString -> IO ()
diff --git a/rust/build.rs b/rust/build.rs
index d633ace..45a8313 100644
--- a/rust/build.rs
+++ b/rust/build.rs
@@ -13,31 +13,15 @@ fn main() {
         .generate()
         .expect("Unable to generate bindings");
 
-    // TODO vibe-coded workaround for hs-bindgen issue:
-    // https://github.com/well-typed/hs-bindgen/issues/1649#issuecomment-3994425922
     let mut buf = Vec::new();
     bindings.write(&mut buf);
     let header = String::from_utf8(buf).unwrap();
-    let mut patched = String::new();
-    let mut saw_union = false;
-    for line in header.lines() {
-        if line == "  };" && saw_union {
-            patched.push_str("  } body;\n");
-            saw_union = false;
-            continue;
-        }
-        if line == "  union {" {
-            saw_union = true;
-        }
-        patched.push_str(line);
-        patched.push('\n');
-    }
     fs::write(
         PathBuf::from(&crate_dir)
             .join("target")
             .join(&profile)
             .join("garnet_rs.h"),
-        patched,
+        header,
     )
     .unwrap();
 }