diff --git a/libc-test/build.rs b/libc-test/build.rs
index 3d5fd89d34478..e6618beb295cd 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -4273,6 +4273,8 @@ fn test_linux(target: &str) {
                 | "PR_MDWE_NO_INHERIT"
                 | "PR_MDWE_REFUSE_EXEC_GAIN"
                 | "PR_SET_MDWE"
+                | "PR_GET_MEMORY_MERGE"
+                | "PR_SET_MEMORY_MERGE"
                 | "IPPROTO_ETHERNET"
                 | "IPPROTO_MPTCP"
                 | "SI_DETHREAD"
diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
index 6b78874a1ea07..058af182cec0e 100644
--- a/libc-test/semver/linux.txt
+++ b/libc-test/semver/linux.txt
@@ -2407,6 +2407,7 @@ PR_GET_FPEXC
 PR_GET_FP_MODE
 PR_GET_KEEPCAPS
 PR_GET_MDWE
+PR_GET_MEMORY_MERGE
 PR_GET_NAME
 PR_GET_NO_NEW_PRIVS
 PR_GET_PDEATHSIG
@@ -2446,6 +2447,7 @@ PR_SET_FPEXC
 PR_SET_FP_MODE
 PR_SET_KEEPCAPS
 PR_SET_MDWE
+PR_SET_MEMORY_MERGE
 PR_SET_MM
 PR_SET_MM_ARG_END
 PR_SET_MM_ARG_START
diff --git a/src/unix/linux_like/linux/mod.rs b/src/unix/linux_like/linux/mod.rs
index 6f1261972e9f3..4c9392ab2434e 100644
--- a/src/unix/linux_like/linux/mod.rs
+++ b/src/unix/linux_like/linux/mod.rs
@@ -1608,6 +1608,8 @@ pub const PR_SET_MDWE: c_int = 65;
 pub const PR_GET_MDWE: c_int = 66;
 pub const PR_MDWE_REFUSE_EXEC_GAIN: c_uint = 1 << 0;
 pub const PR_MDWE_NO_INHERIT: c_uint = 1 << 1;
+pub const PR_SET_MEMORY_MERGE: c_int = 67;
+pub const PR_GET_MEMORY_MERGE: c_int = 68;
 
 pub const GRND_NONBLOCK: c_uint = 0x0001;
 pub const GRND_RANDOM: c_uint = 0x0002;