diff --git a/bazel/cc_toolchains/clang_cc_toolchain_config.bzl b/bazel/cc_toolchains/clang_cc_toolchain_config.bzl
index 342b5a7f9c57..af408582f523 100644
--- a/bazel/cc_toolchains/clang_cc_toolchain_config.bzl
+++ b/bazel/cc_toolchains/clang_cc_toolchain_config.bzl
@@ -268,19 +268,6 @@ def _impl(ctx):
                     "-O1",
                 ])],
             ),
-            # Use a conditional flag set for enabling the fast instruction
-            # selector to work around an LLVM bug:
-            # https://github.com/llvm/llvm-project/issues/56133
-            flag_set(
-                actions = codegen_compile_actions,
-                flag_groups = [flag_group(flags = [
-                    "-mllvm",
-                    "-fast-isel",
-                ])],
-                with_features = [
-                    with_feature_set(not_features = ["fuzzer"]),
-                ],
-            ),
         ],
     )
     default_optimization_flags = feature(