diff --git a/LICENSE b/LICENSE
index d13be32..2df1f81 100644
--- a/LICENSE
+++ b/LICENSE
@@ -78,4 +78,3 @@ conflicts of law. If any provision of this license shall be deemed
 unenforceable or contrary to the law, the rest of this license shall remain in
 full effect and interpreted in an enforceable manner that most nearly captures
 the effect of the original license.
-
diff --git a/README.md b/README.md
index 499ba07..a76bf35 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,14 @@ The file `cpdfmanual.pdf` in this folder is the documentation for the command
 line tools. The documentation for the cpdf OCaml library is in `doc/html/cpdf/`
 in this folder once the library has been built.
 
+C API
+-----
+
+A C interface to cpdf is available, in source and binary form:
+
+[source]https://github.com/johnwhitington/cpdflib-source
+[binary]https://github.com/coherentgraphics/cpdflib-binary
+
 Contact
 -------