diff --git a/srcpkgs/chicken/template b/srcpkgs/chicken/template
index 6ce097cc47a..6d56c49c256 100644
--- a/srcpkgs/chicken/template
+++ b/srcpkgs/chicken/template
@@ -1,13 +1,15 @@
 # Template file for 'chicken'
 pkgname=chicken
-version=4.11.0
+version=4.12.0
 revision=1
 short_desc="A practical and portable Scheme system"
 maintainer="Juan RP <xtraeme@voidlinux.eu>"
 license="BSD"
 homepage="http://www.call-cc.org"
 distfiles="http://code.call-cc.org/releases/$version/$pkgname-$version.tar.gz"
-checksum=e3dc2b8f95b6a3cd59c85b5bb6bdb2bd9cefc45b5d536a20cad74e3c63f4ad89
+checksum=605ace459bc66e8c5f82abb03d9b1c9ca36f1c2295931d244d03629a947a6989
+
+conflicts="mono>=0" # /usr/bin/csc
 
 # No ARM support??!!!
 only_for_archs="i686 i686-musl x86_64 x86_64-musl"