diff --git a/async/BUILD.bazel b/async/BUILD.bazel
index 3f3c7dc..17cdcf9 100644
--- a/async/BUILD.bazel
+++ b/async/BUILD.bazel
@@ -10,6 +10,7 @@ zig_library(
         "executor.zig",
         "stack.zig",
     ],
+    copts = ["-lc"],
     extra_srcs = glob(["asm/*.s"]),
     main = "async.zig",
     visibility = ["//visibility:public"],
diff --git a/platforms/BUILD.bazel b/platforms/BUILD.bazel
index 45fddc0..62a36b8 100644
--- a/platforms/BUILD.bazel
+++ b/platforms/BUILD.bazel
@@ -4,6 +4,9 @@ platform(
         "@platforms//cpu:x86_64",
         "@platforms//os:linux",
     ],
+    flags = [
+        "--force_pic=true",  # required for protobuf upb on Linux
+    ],
     visibility = ["//visibility:public"],
 )
 
@@ -13,6 +16,9 @@ platform(
         "@platforms//cpu:aarch64",
         "@platforms//os:linux",
     ],
+    flags = [
+        "--force_pic=true",  # required for protobuf upb on Linux
+    ],
     visibility = ["//visibility:public"],
 )
 
diff --git a/stdx/BUILD.bazel b/stdx/BUILD.bazel
index e44bda2..2594731 100644
--- a/stdx/BUILD.bazel
+++ b/stdx/BUILD.bazel
@@ -15,6 +15,7 @@ zig_library(
         "signature.zig",
         "time.zig",
     ],
+    copts = ["-lc"],
     main = "stdx.zig",
     visibility = ["//visibility:public"],
 )