diff --git a/ssh/test/agent_unix_test.go b/ssh/test/agent_unix_test.go
index 26c88eb..b56c58c 100644
--- a/ssh/test/agent_unix_test.go
+++ b/ssh/test/agent_unix_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin freebsd linux netbsd openbsd
+// +build darwin dragonfly freebsd linux netbsd openbsd
 
 package test
 
diff --git a/ssh/test/cert_test.go b/ssh/test/cert_test.go
index d4f7226..95a12c1 100644
--- a/ssh/test/cert_test.go
+++ b/ssh/test/cert_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin freebsd linux netbsd openbsd
+// +build darwin dragonfly freebsd linux netbsd openbsd
 
 package test
 
diff --git a/ssh/test/forward_unix_test.go b/ssh/test/forward_unix_test.go
index 881a9da..877a88c 100644
--- a/ssh/test/forward_unix_test.go
+++ b/ssh/test/forward_unix_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin freebsd linux netbsd openbsd
+// +build darwin dragonfly freebsd linux netbsd openbsd
 
 package test
 
diff --git a/ssh/test/test_unix_test.go b/ssh/test/test_unix_test.go
index 660f3d5..597ee08 100644
--- a/ssh/test/test_unix_test.go
+++ b/ssh/test/test_unix_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin freebsd linux netbsd openbsd plan9
+// +build darwin dragonfly freebsd linux netbsd openbsd plan9
 
 package test