diff --git a/README.md b/README.md
index cddcd3e..9c0ac7c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
-# ComplexOptInterface
+**This package is deprecated and should not be used. The features in it have been moved to JuMP and MathOptInterface.**
 
-**This package is still in early development, feedback is welcome!**
+# ComplexOptInterface
 
 | **Build Status** | **Social** |
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