diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2b52baa..4670ef0 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -96,7 +96,9 @@ jobs:
         run: nix-shell --run "xpg --cassert -v ${{ matrix.pg-version }} build"
 
       - name: run tests
-        run: nix-shell --run "xpg --cassert -v ${{ matrix.pg-version }} test"
+        run: |
+          export UBSAN_OPTIONS="print_stacktrace=1:disable_coredump=0:abort_on_error=1:verbosity=0"
+          nix-shell --run "xpg --cassert -v ${{ matrix.pg-version }} test"
 
       - if: ${{ failure() }}
         run: cat regression.diffs
diff --git a/flake.lock b/flake.lock
index 704715e..d29f984 100644
--- a/flake.lock
+++ b/flake.lock
@@ -43,17 +43,17 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1791394750,
-        "narHash": "sha256-SMv4EKUaGmfUyXyeGHW3AiX1vbef7El56RKTIxio8jQ=",
+        "lastModified": 1794354293,
+        "narHash": "sha256-6ErAPda+n5dh8fuYGmUHI7ZgwFtpLVkjLJpHeg/gFWA=",
         "owner": "supabase",
         "repo": "xpg",
-        "rev": "8f2a2005e8e020e0db5a7cbb94a87a9dd3227411",
+        "rev": "b116ad283cf88b92f883ad71690053d762b41261",
         "type": "github"
       },
       "original": {
         "owner": "supabase",
-        "ref": "v2.6.0",
         "repo": "xpg",
+        "rev": "b116ad283cf88b92f883ad71690053d762b41261",
         "type": "github"
       }
     }
diff --git a/flake.nix b/flake.nix
index ee2766b..396c693 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,7 @@
     # 2025-11-13
     nixpkgs.url = "github:NixOS/nixpkgs/91c9a64ce2a84e648d0cf9671274bb9c2fb9ba60";
     xpg = {
-      url = "github:supabase/xpg/v2.7.0";
+      url = "github:supabase/xpg/v2.7.1";
     };
   };