diff --git a/Cargo.toml b/Cargo.toml
index 29e8df7..5b674f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,9 +3,11 @@ name = "roowho2"
 version = "0.1.0"
 edition = "2024"
 resolver = "2"
-license = "BSD3"
+license = "BSD-4-Clause"
 authors = [
-  "projects@pvv.ntnu.no",
+  "Programvareverkstedet <projects@pvv.ntnu.no>",
+  "The Regents of the University of California",
+  "Peter Eriksson, Signum Support AB",
 ]
 description = "A modern reimplementation of netkit tools"
 categories = ["command-line-interface", "command-line-utilities"]
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..a824b85
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,31 @@
+Copyright (c) 2026 Programvareverkstedet <projects@pvv.ntnu.no>
+Copyright (c) 1983-1991 The Regents of the University of California.
+Copyright (c) 1993 Peter Eriksson, Signum Support AB
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+ 3. All advertising materials mentioning features or use of this software
+    must display the following acknowledgement:
+      This product includes software developed by the University of
+      California, Berkeley and its contributors.
+ 4. Neither the name of the University nor the names of its contributors
+    may be used to endorse or promote products derived from this software
+    without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE.
diff --git a/README.md b/README.md
index ddff6ca..bee36f8 100644
--- a/README.md
+++ b/README.md
@@ -22,3 +22,6 @@ Reimplementation of a subset of linux' netkit tools.
 - `biff`/`comsat`: nah
 - `ripquery`/`routed`: nuh-uh
 - `rpc*`: no need
+
+
+<small>This product includes software developed by the University of California, Berkeley and its contributors.</small>