diff --git a/Makefile.am b/Makefile.am
index 43120b2..bf5d7ce 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
-AM_CFLAGS = -Wall -std=gnu99 -D_GNU_SOURCE -D_REENTRANT
+AM_CFLAGS = -Wall -Wwrite-strings -Werror -std=gnu99 -D_GNU_SOURCE -D_REENTRANT
EXTRA_DIST = doc
diff --git a/README.html b/README.html
index e69beb9..c5cba3a 100644
--- a/README.html
+++ b/README.html
@@ -8,7 +8,7 @@
JSON-C - A JSON implementation in C
- Latest release: json-c-0.8.tar.gz
+ Latest release: json-c-0.9.tar.gz
JSON-C implements a reference counting object model that allows you to easily
construct JSON objects in C, output them as JSON formatted strings and parse
JSON formatted strings back into the C representation of JSON objects.