diff --git a/libc-test/semver/linux-gnu.txt b/libc-test/semver/linux-gnu.txt
index 1a5f6ab25af84..f6c59d7bc5c3c 100644
--- a/libc-test/semver/linux-gnu.txt
+++ b/libc-test/semver/linux-gnu.txt
@@ -649,6 +649,7 @@ eaccess
 asctime_r
 ctime_r
 strftime
+strftime_l
 strptime
 dirname
 posix_basename
diff --git a/libc-test/semver/linux-musl.txt b/libc-test/semver/linux-musl.txt
index 09c461350f9a5..496a4f11379dc 100644
--- a/libc-test/semver/linux-musl.txt
+++ b/libc-test/semver/linux-musl.txt
@@ -54,6 +54,7 @@ euidaccess
 eaccess
 asctime_r
 strftime
+strftime_l
 strptime
 dirname
 basename
diff --git a/src/unix/linux_like/linux/gnu/mod.rs b/src/unix/linux_like/linux/gnu/mod.rs
index e88ad4eb2ce5b..7696c4d34dcc3 100644
--- a/src/unix/linux_like/linux/gnu/mod.rs
+++ b/src/unix/linux_like/linux/gnu/mod.rs
@@ -1319,6 +1319,13 @@ extern "C" {
         format: *const ::c_char,
         tm: *const ::tm,
     ) -> ::size_t;
+    pub fn strftime_l(
+        s: *mut ::c_char,
+        max: ::size_t,
+        format: *const ::c_char,
+        tm: *const ::tm,
+        locale: ::locale_t,
+    ) -> ::size_t;
     pub fn strptime(s: *const ::c_char, format: *const ::c_char, tm: *mut ::tm) -> *mut ::c_char;
 
     pub fn dirname(path: *mut ::c_char) -> *mut ::c_char;
diff --git a/src/unix/linux_like/linux/musl/mod.rs b/src/unix/linux_like/linux/musl/mod.rs
index 37a8ca2aff2fe..a4108a4a734a4 100644
--- a/src/unix/linux_like/linux/musl/mod.rs
+++ b/src/unix/linux_like/linux/musl/mod.rs
@@ -778,6 +778,13 @@ extern "C" {
         format: *const ::c_char,
         tm: *const ::tm,
     ) -> ::size_t;
+    pub fn strftime_l(
+        s: *mut ::c_char,
+        max: ::size_t,
+        format: *const ::c_char,
+        tm: *const ::tm,
+        locale: ::locale_t,
+    ) -> ::size_t;
     pub fn strptime(s: *const ::c_char, format: *const ::c_char, tm: *mut ::tm) -> *mut ::c_char;
 
     pub fn dirname(path: *mut ::c_char) -> *mut ::c_char;