diff --git a/src/unix/linux_like/linux/gnu/b64/riscv64/align.rs b/src/unix/linux_like/linux/gnu/b64/riscv64/align.rs
index 48d152a5721ec..5b33f2375d39c 100644
--- a/src/unix/linux_like/linux/gnu/b64/riscv64/align.rs
+++ b/src/unix/linux_like/linux/gnu/b64/riscv64/align.rs
@@ -42,3 +42,20 @@ s_no_extra_traits! {
         pub __glibc_reserved: [::c_uint; 3],
     }
 }
+
+s! {
+    #[repr(align(8))]
+    pub struct clone_args {
+        pub flags: ::c_ulonglong,
+        pub pidfd: ::c_ulonglong,
+        pub child_tid: ::c_ulonglong,
+        pub parent_tid: ::c_ulonglong,
+        pub exit_signal: ::c_ulonglong,
+        pub stack: ::c_ulonglong,
+        pub stack_size: ::c_ulonglong,
+        pub tls: ::c_ulonglong,
+        pub set_tid: ::c_ulonglong,
+        pub set_tid_size: ::c_ulonglong,
+        pub cgroup: ::c_ulonglong,
+    }
+}
diff --git a/src/unix/linux_like/linux/musl/b64/riscv64/align.rs b/src/unix/linux_like/linux/musl/b64/riscv64/align.rs
index 48d152a5721ec..5b33f2375d39c 100644
--- a/src/unix/linux_like/linux/musl/b64/riscv64/align.rs
+++ b/src/unix/linux_like/linux/musl/b64/riscv64/align.rs
@@ -42,3 +42,20 @@ s_no_extra_traits! {
         pub __glibc_reserved: [::c_uint; 3],
     }
 }
+
+s! {
+    #[repr(align(8))]
+    pub struct clone_args {
+        pub flags: ::c_ulonglong,
+        pub pidfd: ::c_ulonglong,
+        pub child_tid: ::c_ulonglong,
+        pub parent_tid: ::c_ulonglong,
+        pub exit_signal: ::c_ulonglong,
+        pub stack: ::c_ulonglong,
+        pub stack_size: ::c_ulonglong,
+        pub tls: ::c_ulonglong,
+        pub set_tid: ::c_ulonglong,
+        pub set_tid_size: ::c_ulonglong,
+        pub cgroup: ::c_ulonglong,
+    }
+}