diff --git a/libc-test/build.rs b/libc-test/build.rs
index 276be492591fd..0f2eefaf1c696 100755
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -2650,6 +2650,9 @@ fn test_linux(target: &str) {
             // FIXME: CI's kernel header version is old.
             "sockaddr_can" => true,
 
+            // Requires glibc 2.33 or newer.
+            "mallinfo2" => true,
+
             _ => false,
         }
     });
@@ -2853,6 +2856,9 @@ fn test_linux(target: &str) {
             // FIXME: This needs musl 1.2.2 or later.
             "gettid" if musl => true,
 
+            // Needs glibc 2.33 or later.
+            "mallinfo2" => true,
+
             _ => false,
         }
     });
diff --git a/libc-test/semver/linux-gnu.txt b/libc-test/semver/linux-gnu.txt
index 58b2eb6c944b1..fb3256086cb6c 100644
--- a/libc-test/semver/linux-gnu.txt
+++ b/libc-test/semver/linux-gnu.txt
@@ -546,6 +546,7 @@ glob_t
 globfree
 globfree64
 mallinfo
+mallinfo2
 malloc_usable_size
 mallopt
 nl_mmap_hdr