diff --git a/libc/config/baremetal/arm/headers.txt b/libc/config/baremetal/arm/headers.txt
index b5c93ae34ac25..fe7c88e922e07 100644
--- a/libc/config/baremetal/arm/headers.txt
+++ b/libc/config/baremetal/arm/headers.txt
@@ -6,4 +6,5 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.math
     libc.include.stdlib
     libc.include.string
+    libc.include.strings
 )
diff --git a/libc/config/darwin/arm/headers.txt b/libc/config/darwin/arm/headers.txt
index 1cf5be227aa28..7366c530304d4 100644
--- a/libc/config/darwin/arm/headers.txt
+++ b/libc/config/darwin/arm/headers.txt
@@ -6,4 +6,5 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.math
     libc.include.stdlib
     libc.include.string
+    libc.include.strings
 )
diff --git a/libc/config/darwin/x86_64/headers.txt b/libc/config/darwin/x86_64/headers.txt
index 039550e1bc572..b33fa45e42080 100644
--- a/libc/config/darwin/x86_64/headers.txt
+++ b/libc/config/darwin/x86_64/headers.txt
@@ -7,4 +7,5 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.math
     libc.include.stdlib
     libc.include.string
+    libc.include.strings
 )
diff --git a/libc/config/linux/aarch64/headers.txt b/libc/config/linux/aarch64/headers.txt
index 6c146a56d8bcc..bca7ab4ac8743 100644
--- a/libc/config/linux/aarch64/headers.txt
+++ b/libc/config/linux/aarch64/headers.txt
@@ -10,6 +10,7 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.stdio
     libc.include.stdlib
     libc.include.string
+    libc.include.strings
     libc.include.sys_mman
     libc.include.sys_socket
     libc.include.sys_syscall
diff --git a/libc/config/linux/arm/headers.txt b/libc/config/linux/arm/headers.txt
index b5c93ae34ac25..fe7c88e922e07 100644
--- a/libc/config/linux/arm/headers.txt
+++ b/libc/config/linux/arm/headers.txt
@@ -6,4 +6,5 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.math
     libc.include.stdlib
     libc.include.string
+    libc.include.strings
 )
diff --git a/libc/config/linux/riscv64/headers.txt b/libc/config/linux/riscv64/headers.txt
index 62f36caaa38ba..1165250f561fb 100644
--- a/libc/config/linux/riscv64/headers.txt
+++ b/libc/config/linux/riscv64/headers.txt
@@ -7,5 +7,6 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.stdio
     libc.include.stdlib
     libc.include.string
+    libc.include.strings
     libc.include.time
 )
diff --git a/libc/config/linux/x86_64/headers.txt b/libc/config/linux/x86_64/headers.txt
index b2ff2df4a8736..e285105b1224a 100644
--- a/libc/config/linux/x86_64/headers.txt
+++ b/libc/config/linux/x86_64/headers.txt
@@ -15,6 +15,7 @@ set(TARGET_PUBLIC_HEADERS
     libc.include.stdio
     libc.include.stdlib
     libc.include.string
+    libc.include.strings
     libc.include.termios
     libc.include.threads
     libc.include.time