diff --git a/cli/tsc/dts/lib.deno.ns.d.ts b/cli/tsc/dts/lib.deno.ns.d.ts
index e89f01cdb8..4e9765cef5 100644
--- a/cli/tsc/dts/lib.deno.ns.d.ts
+++ b/cli/tsc/dts/lib.deno.ns.d.ts
@@ -4416,6 +4416,8 @@ declare namespace Deno {
     | "SIGINFO"
     | "SIGINT"
     | "SIGIO"
+    | "SIGPOLL"
+    | "SIGUNUSED"
     | "SIGKILL"
     | "SIGPIPE"
     | "SIGPROF"
diff --git a/runtime/ops/signal.rs b/runtime/ops/signal.rs
index 5aaf1ddb26..ebc6db6d1b 100644
--- a/runtime/ops/signal.rs
+++ b/runtime/ops/signal.rs
@@ -339,9 +339,9 @@ pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
     "SIGVTALRM" => Ok(26),
     "SIGPROF" => Ok(27),
     "SIGWINCH" => Ok(28),
-    "SIGIO" => Ok(29),
+    "SIGIO" | "SIGPOLL" => Ok(29),
     "SIGPWR" => Ok(30),
-    "SIGSYS" => Ok(31),
+    "SIGSYS" | "SIGUNUSED" => Ok(31),
     _ => Err(type_error(format!("Invalid signal : {s}"))),
   }
 }
diff --git a/tests/unit/signal_test.ts b/tests/unit/signal_test.ts
index 1d9b10ae7d..0c0676428a 100644
--- a/tests/unit/signal_test.ts
+++ b/tests/unit/signal_test.ts
@@ -304,3 +304,15 @@ Deno.test(
     );
   },
 );
+
+Deno.test(
+  { ignore: Deno.build.os !== "linux" },
+  function signalAliasLinux() {
+    const i = () => {};
+    Deno.addSignalListener("SIGUNUSED", i);
+    Deno.addSignalListener("SIGPOLL", i);
+
+    Deno.removeSignalListener("SIGUNUSED", i);
+    Deno.removeSignalListener("SIGPOLL", i);
+  },
+);