diff --git a/debian/changelog b/debian/changelog
index 01258fbd..b937ccc2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+llvm-toolchain-4.0 (1:4.0-5) unstable; urgency=medium
+
+  * Prepare version 4.0.1
+
+ --
+
 llvm-toolchain-4.0 (1:4.0-4) unstable; urgency=medium
 
   * Limit the archs where the ocaml binding is built
diff --git a/debian/rules b/debian/rules
index a949da26..ca62eb9e 100755
--- a/debian/rules
+++ b/debian/rules
@@ -6,7 +6,7 @@ DEB_INST		:= $(CURDIR)/debian/tmp/
 # accomodate that by hardcoding the 5 detection
 GCC_VERSION     := $(shell dpkg-query -W -f '$${Version}' g++ | sed -rne 's,^([0-9]+:)?(5|6|[0-9]+\.[0-9]+|[0-9]+).*$$,\2,p')
 LLVM_VERSION	:= 4.0
-LLVM_VERSION_FULL := $(LLVM_VERSION).0
+LLVM_VERSION_FULL := $(LLVM_VERSION).1
 
 SONAME_EXT      := 1
 # Manage the case when the version is 1:3.5~svn213052-1~exp1 or 1:3.4.2-1