diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 05e1e24c..6a2d3c30 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -59,7 +59,7 @@ jobs:
         # TODO: add the following targets, currently broken.
         # "x86_64-fuchsia"
         # "x86_64-unknown-redox"
-        target: ["aarch64-apple-ios", "aarch64-linux-android", "x86_64-apple-darwin", "x86_64-pc-windows-msvc", "x86_64-sun-solaris", "x86_64-unknown-freebsd", "x86_64-unknown-linux-gnu", "x86_64-unknown-netbsd"]
+        target: ["aarch64-apple-ios", "aarch64-linux-android", "x86_64-apple-darwin", "x86_64-pc-windows-msvc", "x86_64-sun-solaris", "x86_64-unknown-freebsd", "x86_64-unknown-illumos", "x86_64-unknown-linux-gnu", "x86_64-unknown-netbsd"]
     steps:
     - uses: actions/checkout@master
     - name: Install Rust
diff --git a/src/sys/unix.rs b/src/sys/unix.rs
index 1254a8e2..d3d3a679 100644
--- a/src/sys/unix.rs
+++ b/src/sys/unix.rs
@@ -95,6 +95,7 @@ pub(crate) use libc::{
         target_os = "android",
         target_os = "freebsd",
         target_os = "fuchsia",
+        target_os = "illumos",
         target_os = "linux",
         target_os = "netbsd",
         target_vendor = "apple",