diff --git a/foreign_cc/private/framework/toolchains/freebsd_commands.bzl b/foreign_cc/private/framework/toolchains/freebsd_commands.bzl
index 99cc3e58..44d15f9f 100644
--- a/foreign_cc/private/framework/toolchains/freebsd_commands.bzl
+++ b/foreign_cc/private/framework/toolchains/freebsd_commands.bzl
@@ -83,7 +83,7 @@ if [ -d "$1" ]; then
   for file in ${files[@]+"${files[@]}"}; do
     local backup=$(mktemp)
     touch -r "${file}" "${backup}"
-    sed -i '' -e 's@'"$2"'@'"$3"'@g' "${file}"
+    /usr/bin/sed -i '' -e 's@'"$2"'@'"$3"'@g' "${file}"
     if [[ "$?" -ne "0" ]]; then
       exit 1
     fi
diff --git a/foreign_cc/private/framework/toolchains/macos_commands.bzl b/foreign_cc/private/framework/toolchains/macos_commands.bzl
index 2a14b48f..0bf7aa8d 100644
--- a/foreign_cc/private/framework/toolchains/macos_commands.bzl
+++ b/foreign_cc/private/framework/toolchains/macos_commands.bzl
@@ -74,7 +74,7 @@ if [ -d "$1" ]; then
   for file in ${files[@]+"${files[@]}"}; do
     local backup=$(mktemp)
     touch -r "${file}" "${backup}"
-    sed -i '' -e 's@'"$2"'@'"$3"'@g' "${file}"
+    /usr/bin/sed -i '' -e 's@'"$2"'@'"$3"'@g' "${file}"
     if [[ "$?" -ne "0" ]]; then
       exit 1
     fi