diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index fcc92e8..0000000
--- a/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-bld
-src/tags
diff --git a/ChangeLog.md b/ChangeLog.md
index 7f8c72a..1ca4936 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,9 @@
+## v0.1.3
+
+### Internal
+
+- Fixed error with incorrect types when determine class of 'wchar_t' symbol for platforms with unsigned 'wchar_t'.
+
 ## v0.1.2
 
 ### Internal
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 5cc01b9..b24dc7a 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -9,7 +9,7 @@ target_include_directories(fort
 )
 
 set_target_properties(fort
-    PROPERTIES VERSION 0.1.2
+    PROPERTIES VERSION 0.1.3
     SOVERSION 0.1)
 
 if(FORT_HAVE_WCHAR)
diff --git a/lib/fort.c b/lib/fort.c
index 2eff40a..d0daa30 100644
--- a/lib/fort.c
+++ b/lib/fort.c
@@ -5806,8 +5806,8 @@ void vector_clear(vector_t *vector)
 
 
 struct interval {
-    int first;
-    int last;
+    wchar_t first;
+    wchar_t last;
 };
 
 /* auxiliary function for binary search in interval table */
diff --git a/lib/fort.h b/lib/fort.h
index b2b4753..cd76da1 100644
--- a/lib/fort.h
+++ b/lib/fort.h
@@ -46,8 +46,8 @@ SOFTWARE.
 
 #define LIBFORT_MAJOR_VERSION 0
 #define LIBFORT_MINOR_VERSION 1
-#define LIBFORT_REVISION 2
-#define LIBFORT_VERSION_STR "0.1.2"
+#define LIBFORT_REVISION 3
+#define LIBFORT_VERSION_STR "0.1.3"
 
 
 /*****************************************************************************
diff --git a/src/fort.h b/src/fort.h
index b2b4753..cd76da1 100644
--- a/src/fort.h
+++ b/src/fort.h
@@ -46,8 +46,8 @@ SOFTWARE.
 
 #define LIBFORT_MAJOR_VERSION 0
 #define LIBFORT_MINOR_VERSION 1
-#define LIBFORT_REVISION 2
-#define LIBFORT_VERSION_STR "0.1.2"
+#define LIBFORT_REVISION 3
+#define LIBFORT_VERSION_STR "0.1.3"
 
 
 /*****************************************************************************