diff --git a/.github/workflows/test-external.yaml b/.github/workflows/test-external.yaml
index e5f52f69..957ce400 100644
--- a/.github/workflows/test-external.yaml
+++ b/.github/workflows/test-external.yaml
@@ -25,7 +25,7 @@ jobs:
           - "3.2"
           - "3.3"
           - "head"
-        
+    
     steps:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index fa1e3606..d4de9580 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -50,6 +50,10 @@ jobs:
         ruby-version: ${{matrix.ruby}}
         bundler-cache: true
     
+    - name: Install packages (Ubuntu)
+      if: matrix.os == 'ubuntu'
+      run: sudo apt-get install -y liburing-dev
+    
     - name: Run tests
       timeout-minutes: 10
       run: bundle exec bake build test
diff --git a/ext/io/event/selector/uring.c b/ext/io/event/selector/uring.c
index 45002f8a..80640649 100644
--- a/ext/io/event/selector/uring.c
+++ b/ext/io/event/selector/uring.c
@@ -602,7 +602,7 @@ static inline off_t io_seekable(int descriptor) {
 	return -1;
 }
 #else
-#warning Upgrade your kernel to 5.16! io_uring bugs prevent efficient io_read/io_write hooks.
+#warning Upgrade your kernel to 5.16+! io_uring bugs prevent efficient io_read/io_write hooks.
 static inline off_t io_seekable(int descriptor)
 {
 	if (lseek(descriptor, 0, SEEK_CUR) == -1) {