diff --git a/changelog/2680.fixed.md b/changelog/2680.fixed.md
new file mode 100644
index 0000000000..911bef0c1f
--- /dev/null
+++ b/changelog/2680.fixed.md
@@ -0,0 +1 @@
+Include `SIGPWR` in `impl FromStr for Signal` for AIX
diff --git a/src/sys/signal.rs b/src/sys/signal.rs
index d8fc64e230..817af4bfca 100644
--- a/src/sys/signal.rs
+++ b/src/sys/signal.rs
@@ -172,6 +172,7 @@ impl FromStr for Signal {
                 linux_android,
                 target_os = "emscripten",
                 target_os = "fuchsia",
+                target_os = "aix",
             ))]
             "SIGPWR" => Signal::SIGPWR,
             "SIGSYS" => Signal::SIGSYS,