diff --git a/configure.ac b/configure.ac
index 7a9bb6c2ad..1d83467378 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([yara], [4.0.0], [vmalvarez@virustotal.com])
+AC_INIT([yara], [4.0.1], [vmalvarez@virustotal.com])
 
 AM_SILENT_RULES([yes])
 AC_CONFIG_SRCDIR([yara.c])
diff --git a/docs/conf.py b/docs/conf.py
index 742e73f7f3..d2ae90eee8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -53,7 +53,7 @@
 # The short X.Y version.
 version = '4.0'
 # The full version, including alpha/beta/rc tags.
-release = '4.0.0'
+release = '4.0.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/libyara/Makefile.am b/libyara/Makefile.am
index f1b92609ee..cb878b4223 100644
--- a/libyara/Makefile.am
+++ b/libyara/Makefile.am
@@ -144,7 +144,7 @@ dist_noinst_DATA = pb/yara.proto
 
 lib_LTLIBRARIES = libyara.la
 
-libyara_la_LDFLAGS = -version-number 4:0:0
+libyara_la_LDFLAGS = -version-number 4:0:1
 
 BUILT_SOURCES = \
 	lexer.c \
diff --git a/libyara/atoms.c b/libyara/atoms.c
index 370de68710..8884fcf55f 100644
--- a/libyara/atoms.c
+++ b/libyara/atoms.c
@@ -1415,7 +1415,8 @@ int yr_atoms_extract_from_re(
   // This is to avoid the situation where we have "base64 wide" because
   // the wide has already been applied BEFORE the base64 encoding.
   if (modifier.flags & STRING_FLAGS_WIDE &&
-      !(modifier.flags & STRING_FLAGS_BASE64 || modifier.flags & STRING_FLAGS_BASE64_WIDE))
+      !(modifier.flags & STRING_FLAGS_BASE64 ||
+        modifier.flags & STRING_FLAGS_BASE64_WIDE))
   {
     FAIL_ON_ERROR_WITH_CLEANUP(
         _yr_atoms_wide(*atoms, &wide_atoms),
diff --git a/libyara/include/yara/libyara.h b/libyara/include/yara/libyara.h
index b5825195cf..e8bf229054 100644
--- a/libyara/include/yara/libyara.h
+++ b/libyara/include/yara/libyara.h
@@ -34,7 +34,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #define YR_MAJOR_VERSION   4
 #define YR_MINOR_VERSION   0
-#define YR_MICRO_VERSION   0
+#define YR_MICRO_VERSION   1
 
 #define version_str(s) _version_str(s)
 #define _version_str(s) #s