diff --git a/include/etl/basic_string.h b/include/etl/basic_string.h
index e3effdf0..10c0afc8 100644
--- a/include/etl/basic_string.h
+++ b/include/etl/basic_string.h
@@ -437,6 +437,7 @@ namespace etl
 
       current_size = new_size;
       p_buffer[new_size] = 0;
+      cleanup();
     }
 
     //*********************************************************************
diff --git a/include/etl/version.h b/include/etl/version.h
index da98a129..f338b0c8 100644
--- a/include/etl/version.h
+++ b/include/etl/version.h
@@ -39,7 +39,7 @@ SOFTWARE.
 
 #define ETL_VERSION_MAJOR 14
 #define ETL_VERSION_MINOR 23
-#define ETL_VERSION_PATCH  0
+#define ETL_VERSION_PATCH  1
 
 #define ETL_VERSION       ETL_STRINGIFY(ETL_VERSION_MAJOR) ETL_STRINGIFY(ETL_VERSION_MINOR) ETL_STRINGIFY(ETL_VERSION_PATCH)
 #define ETL_VERSION_W     ETL_WIDE_STRING(ETL_CONCAT(ETL_CONCAT(ETL_VERSION_MAJOR, ETL_VERSION_MINOR), ETL_VERSION_PATCH))
diff --git a/support/Release notes.txt b/support/Release notes.txt
index 42f12388..b01728aa 100644
--- a/support/Release notes.txt	
+++ b/support/Release notes.txt	
@@ -1,3 +1,7 @@
+===============================================================================
+14.23.1
+Added missing 'cleanup' to string's resize() method.
+
 ===============================================================================
 14.23.0
 Added an optional secure mode to strings so that unused space will be cleared to zero
diff --git a/test/test_string_char.cpp b/test/test_string_char.cpp
index 9d5644fc..b30d30c1 100644
--- a/test/test_string_char.cpp
+++ b/test/test_string_char.cpp
@@ -3689,6 +3689,20 @@ namespace
       CHECK(std::find_if(text.end(), pe, [](Text::value_type x) { return x != 0; }) == pe);
     }
 
+    //*************************************************************************
+    TEST_FIXTURE(SetupFixture, test_secure_after_resize_down)
+    {
+      Text text;
+      text.set_secure();
+      text.assign(STR("ABCDEF"));
+
+      Text::pointer pe = text.end();
+
+      text.resize(text.size() - 3U);
+
+      CHECK(std::find_if(text.end(), pe, [](Text::value_type x) { return x != 0; }) == pe);
+    }
+
     //*************************************************************************
     TEST_FIXTURE(SetupFixture, test_secure_after_erase)
     {