diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index fcd601c..e839bea 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -42,6 +42,7 @@
      pk.c
      pk_wrap.c
      pkparse.c
+     pkwrite.c
      rsa.c
      sha1.c
      sha256.c