diff --git a/INSTALL.md b/INSTALL.md
index 229154dc2e..4e9ef81007 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -28,22 +28,6 @@ pro hand -p true -s false -n false SIGBUS
 pro hand -p true -s false -n false SIGSEGV
 ```
 
-### Sanitizers
-
-Musl does not have proper sanitizer support, so until we support native (GNU) linux builds, these are limited to mac only.
-
-In order to use address sanitizer (`-Dasan`) and undefined behavior sanitizer (`-Dubsan`), you need to have version 18 of llvm installed on your machine. You also have to build natively, since cross-compilation is not supported.
-
-macOS:
-```terminal
-brew install llvm@18
-```
-
-<!-- linux: -->
-<!-- ```terminal -->
-<!-- apt-get install llvm-18 clang-18 -->
-<!-- ``` -->
-
 ## Build
 
 Once you install `zig`, you're ready to build:
@@ -89,12 +73,6 @@ Supported values:
 Provide additional compiler flags. These propagate to all build artifacts and
 dependencies.
 
-#### `-Dasan`
-Enable address sanitizer. Only supported in native macos builds. Requires llvm 18, see [prerequisites](#sanitizers).
-
-#### `-Dubsan`
-Enable undefined behavior sanitizer. Only supported in native macos builds. Requires llvm 18, see [prerequisites](#sanitizers).
-
 <!-- ## LSP Integration -->
 
 <!-- ```console -->
diff --git a/build.zig b/build.zig
index d7bd8e1117..ded7b4cca2 100644
--- a/build.zig
+++ b/build.zig
@@ -2,7 +2,6 @@ const std = @import("std");
 
 const VERSION = "3.2";
 
-// TODO: x86_64-linux-gnu & aarch64-linux-gnu
 const targets: []const std.Target.Query = &.{
     .{ .cpu_arch = .aarch64, .os_tag = .macos, .abi = null },
     .{ .cpu_arch = .x86_64, .os_tag = .macos, .abi = null },
@@ -20,8 +19,6 @@ const BuildCfg = struct {
     mem_dbg: bool = false,
     c3dbg: bool = false,
     snapshot_validation: bool = false,
-    ubsan: bool = false,
-    asan: bool = false,
 };
 
 pub fn build(b: *std.Build) !void {
@@ -88,26 +85,6 @@ pub fn build(b: *std.Build) !void {
         "Binary name (Default: urbit)",
     ) orelse "urbit";
 
-    // Sanitizers are not properly supported in musl => mac only
-
-    const asan = if (target.query.isNative() and target.result.isDarwin())
-        b.option(
-            bool,
-            "asan",
-            "Enable address sanitizer (native only, requires llvm@18)",
-        ) orelse false
-    else
-        false;
-
-    const ubsan = if (target.query.isNative() and target.result.isDarwin())
-        b.option(
-            bool,
-            "ubsan",
-            "Enable undefined behavior sanitizer (native only, requires llvm@18)",
-        ) orelse false
-    else
-        false;
-
     // Parse short git rev
     //
     var file = try std.fs.cwd().openFile(".git/logs/HEAD", .{});
@@ -141,8 +118,6 @@ pub fn build(b: *std.Build) !void {
         .mem_dbg = mem_dbg,
         .c3dbg = c3dbg,
         .snapshot_validation = snapshot_validation,
-        .asan = asan,
-        .ubsan = ubsan,
         .include_test_steps = !all,
     };
 
@@ -181,38 +156,12 @@ fn build_single(
 
     try global_flags.appendSlice(cfg.flags);
     try global_flags.appendSlice(&.{
+        "-fno-sanitize=all",
         "-g",
         "-Wall",
         "-Werror",
     });
 
-    if (!cfg.asan and !cfg.ubsan)
-        try global_flags.appendSlice(&.{
-            "-fno-sanitize=all",
-        });
-
-    if (cfg.asan and !cfg.ubsan)
-        try global_flags.appendSlice(&.{
-            "-Wno-deprecated",
-            "-fsanitize=address",
-            "-fno-sanitize=undefined",
-            "-fno-sanitize-trap=undefined",
-        });
-
-    if (!cfg.asan and cfg.ubsan)
-        try global_flags.appendSlice(&.{
-            "-fsanitize=undefined",
-            "-fno-sanitize-trap=undefined",
-        });
-
-    if (cfg.asan and cfg.ubsan)
-        try global_flags.appendSlice(&.{
-            "-Wno-deprecated",
-            "-fsanitize=address",
-            "-fsanitize=undefined",
-            "-fno-sanitize-trap=undefined",
-        });
-
     //
     // CFLAGS for Urbit Libs and Binaries
     //
@@ -935,34 +884,6 @@ fn build_single(
 
     urbit.linkLibC();
 
-    if (t.isDarwin()) {
-        // Requires llvm@18 homebrew installation
-        if (cfg.asan or cfg.ubsan)
-            urbit.addLibraryPath(.{
-                .cwd_relative = "/opt/homebrew/opt/llvm/lib/clang/18/lib/darwin",
-            });
-        if (cfg.asan) urbit.linkSystemLibrary("clang_rt.asan_osx_dynamic");
-        if (cfg.ubsan) urbit.linkSystemLibrary("clang_rt.ubsan_osx_dynamic");
-    }
-
-    if (t.os.tag == .linux) {
-        // Requires llvm-18 and clang-18 installation
-        if (cfg.asan or cfg.ubsan)
-            urbit.addLibraryPath(.{
-                .cwd_relative = "/usr/lib/clang/18/lib/linux",
-            });
-        if (t.cpu.arch == .x86_64) {
-            if (cfg.asan) urbit.linkSystemLibrary("clang_rt.asan-x86_64");
-            if (cfg.ubsan)
-                urbit.linkSystemLibrary("clang_rt.ubsan_standalone-x86_64");
-        }
-        if (t.cpu.arch == .aarch64) {
-            if (cfg.asan) urbit.linkSystemLibrary("clang_rt.asan-aarch64");
-            if (cfg.ubsan)
-                urbit.linkSystemLibrary("clang_rt.ubsan_standalone-aarch64");
-        }
-    }
-
     urbit.linkLibrary(vere);
     urbit.linkLibrary(pkg_noun);
     urbit.linkLibrary(pkg_c3);
diff --git a/pkg/c3/portable.h b/pkg/c3/portable.h
index eeee55cc22..4a507a8e3e 100644
--- a/pkg/c3/portable.h
+++ b/pkg/c3/portable.h
@@ -129,11 +129,7 @@
 #       define U3_OS_LoomBits 30
 #   elif defined(U3_OS_osx)
 #     ifdef __LP64__
-#       ifdef ASAN_ENABLED
-#         define U3_OS_LoomBase 0x728000000000
-#       else
-#         define U3_OS_LoomBase 0x28000000000
-#       endif
+#       define U3_OS_LoomBase 0x28000000000
 #     else
 #       define U3_OS_LoomBase 0x4000000
 #     endif