diff --git a/dh/x25519/BUILD.bazel b/dh/x25519/BUILD.bazel
index d569bc1..13a942d 100644
--- a/dh/x25519/BUILD.bazel
+++ b/dh/x25519/BUILD.bazel
@@ -12,7 +12,9 @@ go_library(
         "doc.go",
         "key.go",
         "table.go",
+        "//math/fp25519:fp_amd64.h",
     ],
+    cgo = True,
     importpath = "github.com/cloudflare/circl/dh/x25519",
     visibility = ["//visibility:public"],
     deps = [
diff --git a/dh/x448/BUILD.bazel b/dh/x448/BUILD.bazel
index ed287c6..cdbd4f1 100644
--- a/dh/x448/BUILD.bazel
+++ b/dh/x448/BUILD.bazel
@@ -12,7 +12,9 @@ go_library(
         "doc.go",
         "key.go",
         "table.go",
+        "//math/fp448:fp_amd64.h",
     ],
+    cgo = True,
     importpath = "github.com/cloudflare/circl/dh/x448",
     visibility = ["//visibility:public"],
     deps = [
diff --git a/math/fp25519/BUILD.bazel b/math/fp25519/BUILD.bazel
index c9973ac..e98be64 100644
--- a/math/fp25519/BUILD.bazel
+++ b/math/fp25519/BUILD.bazel
@@ -1,5 +1,10 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")

+exports_files(
+    ["fp_amd64.h"],
+    visibility = ["//dh/x25519:__pkg__"],
+)
+
 go_library(
     name = "fp25519",
     srcs = [
diff --git a/math/fp448/BUILD.bazel b/math/fp448/BUILD.bazel
index c371ca5..ebc055d 100644
--- a/math/fp448/BUILD.bazel
+++ b/math/fp448/BUILD.bazel
@@ -1,5 +1,10 @@
 load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")

+exports_files(
+    ["fp_amd64.h"],
+    visibility = ["//dh/x448:__pkg__"],
+)
+
 go_library(
     name = "fp448",
     srcs = [