diff --git a/sigchainlib/version-script.txt b/sigchainlib/version-script.txt
new file mode 100644
index 0000000..8030da4
--- /dev/null
+++ b/sigchainlib/version-script.txt
@@ -0,0 +1,12 @@
+{
+global:
+  ClaimSignalChain;
+  UnclaimSignalChain;
+  InvokeUserSignalHandler;
+  InitializeSignalChain;
+  sigaction;
+  signal;
+  sigprocmask;
+local:
+  *;
+};