diff --git a/libc-test/semver/apple.txt b/libc-test/semver/apple.txt
index 7b11ad7c66ebd..97c76d0365dcd 100644
--- a/libc-test/semver/apple.txt
+++ b/libc-test/semver/apple.txt
@@ -2195,6 +2195,7 @@ shmctl
 shmdt
 shmget
 shmid_ds
+sig_t
 sigaltstack
 sigevent
 siginfo_t
diff --git a/libc-test/semver/dragonfly.txt b/libc-test/semver/dragonfly.txt
index 6d41c8c6cabd9..1c7d4a1110777 100644
--- a/libc-test/semver/dragonfly.txt
+++ b/libc-test/semver/dragonfly.txt
@@ -1606,6 +1606,7 @@ shmat
 shmctl
 shmdt
 shmget
+sig_t
 sigaltstack
 sigevent
 siginfo_t
diff --git a/libc-test/semver/freebsd.txt b/libc-test/semver/freebsd.txt
index 110e75e2bca12..d07c6cb7a87c4 100644
--- a/libc-test/semver/freebsd.txt
+++ b/libc-test/semver/freebsd.txt
@@ -2368,6 +2368,7 @@ shmctl
 shmdt
 shmget
 shmid_ds
+sig_t
 sigaltstack
 sigevent
 siginfo_t
diff --git a/libc-test/semver/netbsd.txt b/libc-test/semver/netbsd.txt
index 982f610a4f3aa..c8df66d004950 100644
--- a/libc-test/semver/netbsd.txt
+++ b/libc-test/semver/netbsd.txt
@@ -1571,6 +1571,7 @@ shmctl
 shmdt
 shmget
 shmid_ds
+sig_t
 sigaltstack
 sigevent
 siginfo_t
diff --git a/libc-test/semver/openbsd.txt b/libc-test/semver/openbsd.txt
index 575fcc0736075..9bd0c238979d8 100644
--- a/libc-test/semver/openbsd.txt
+++ b/libc-test/semver/openbsd.txt
@@ -1332,6 +1332,7 @@ shmctl
 shmdt
 shmget
 shmid_ds
+sig_t
 sigaltstack
 siginfo_t
 sigsuspend
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index fceea8869cbfd..adaac55f75e9c 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -327,7 +327,7 @@ s! {
 
     pub struct sigaction {
         // FIXME(union): this field is actually a union
-        pub sa_sigaction: crate::sighandler_t,
+        pub sa_sigaction: crate::sig_t,
         pub sa_mask: sigset_t,
         pub sa_flags: c_int,
     }
diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index 0c93d2edc2f4b..2127b603986f8 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -164,7 +164,7 @@ s! {
     }
 
     pub struct sigaction {
-        pub sa_sigaction: crate::sighandler_t,
+        pub sa_sigaction: crate::sig_t,
         pub sa_flags: c_int,
         pub sa_mask: sigset_t,
     }
diff --git a/src/unix/bsd/netbsdlike/mod.rs b/src/unix/bsd/netbsdlike/mod.rs
index e4d4e68ad1fb7..71c07b72ad177 100644
--- a/src/unix/bsd/netbsdlike/mod.rs
+++ b/src/unix/bsd/netbsdlike/mod.rs
@@ -27,7 +27,7 @@ s! {
     }
 
     pub struct sigaction {
-        pub sa_sigaction: crate::sighandler_t,
+        pub sa_sigaction: crate::sig_t,
         pub sa_mask: crate::sigset_t,
         pub sa_flags: c_int,
     }
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index 79c3ef8be2220..1520b210304ea 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -18,6 +18,18 @@ pub type pid_t = i32;
 pub type in_addr_t = u32;
 pub type in_port_t = u16;
 pub type sighandler_t = size_t;
+#[cfg(any(
+    target_os = "macos",
+    target_os = "ios",
+    target_os = "tvos",
+    target_os = "watchos",
+    target_os = "visionos",
+    target_os = "freebsd",
+    target_os = "dragonfly",
+    target_os = "openbsd",
+    target_os = "netbsd"
+))]
+pub type sig_t = sighandler_t;
 pub type cc_t = c_uchar;
 
 cfg_if! {