diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c7230b..f825b7d 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,9 @@
 ## CHANGELOG
 
-### Unpublished
+### v0.1.1 (2020-11-07)
 
+* Internal functions are now namespaced with _fsio prefix.
+* c_string_buffer upgraded to 0.1.4
 * Improved build setup (no need to list test names).
 
 ### v0.1.0 (2020-09-25)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9d4d559..1a5a37b 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,7 @@ macro(add_external_lib)
     LIBRARY_PARENT_DIRECTORY target
   )
 endmacro(add_external_lib)
-add_external_lib("string_buffer" "v0.1.3")
+add_external_lib("string_buffer" "v0.1.4")
 
 include_directories(include "${STRING_BUFFER_INCLUDE}")
 
diff --git a/src/fsio.c b/src/fsio.c
index 132f7d5..51670d1 100644
--- a/src/fsio.c
+++ b/src/fsio.c
@@ -8,18 +8,18 @@
 #include <sys/stat.h>
 
 
-bool _write_text_file(char *, char *, char *);
+bool _fsio_write_text_file(char *, char *, char *);
 
 
 bool fsio_write_text_file(char *file, char *text)
 {
-  return(_write_text_file(file, text, "w"));
+  return(_fsio_write_text_file(file, text, "w"));
 }
 
 
 bool fsio_append_text_file(char *file, char *text)
 {
-  return(_write_text_file(file, text, "a"));
+  return(_fsio_write_text_file(file, text, "a"));
 }
 
 
@@ -126,7 +126,7 @@ bool fsio_mkdirs(char *directory, mode_t mode)
 }
 
 
-bool _write_text_file(char *file, char *text, char *mode)
+bool _fsio_write_text_file(char *file, char *text, char *mode)
 {
   if (file == NULL || text == NULL)
   {