diff --git a/doc/xml/release.xml b/doc/xml/release.xml
index 7e817cf30..a8df74b4b 100644
--- a/doc/xml/release.xml
+++ b/doc/xml/release.xml
@@ -37,6 +37,10 @@
                         <p><code>varNewKv()</code> accepts a <code>KeyValue</code> object rather than creating one.</p>
                     </release-item>
 
+                    <release-item>
+                        <p>Add <id>true</id> and <id>false</id> <code>String</code> constants.</p>
+                    </release-item>
+
                     <release-item>
                         <p>Refactor <code>Ini</code> interface to expose <code>String</code> values instead of <code>Variant</code>.</p>
                     </release-item>
diff --git a/src/common/type/string.c b/src/common/type/string.c
index 0b5b51b20..334521853 100644
--- a/src/common/type/string.c
+++ b/src/common/type/string.c
@@ -19,10 +19,12 @@ STRING_EXTERN(BRACKETR_STR,                                         "]");
 STRING_EXTERN(CR_STR,                                               "\r");
 STRING_EXTERN(EMPTY_STR,                                            "");
 STRING_EXTERN(EQ_STR,                                               "=");
+STRING_EXTERN(FALSE_STR,                                            "false");
 STRING_EXTERN(FSLASH_STR,                                           "/");
 STRING_EXTERN(LF_STR,                                               "\n");
 STRING_EXTERN(N_STR,                                                "n");
 STRING_EXTERN(NULL_STR,                                             "null");
+STRING_EXTERN(TRUE_STR,                                             "true");
 STRING_EXTERN(Y_STR,                                                "y");
 STRING_EXTERN(ZERO_STR,                                             "0");
 
diff --git a/src/common/type/string.h b/src/common/type/string.h
index fba2f0a1a..bbabca92b 100644
--- a/src/common/type/string.h
+++ b/src/common/type/string.h
@@ -122,10 +122,12 @@ STRING_DECLARE(BRACKETR_STR);
 STRING_DECLARE(CR_STR);
 STRING_DECLARE(EMPTY_STR);
 STRING_DECLARE(EQ_STR);
+STRING_DECLARE(FALSE_STR);
 STRING_DECLARE(FSLASH_STR);
 STRING_DECLARE(LF_STR);
 STRING_DECLARE(N_STR);
 STRING_DECLARE(NULL_STR);
+STRING_DECLARE(TRUE_STR);
 STRING_DECLARE(Y_STR);
 STRING_DECLARE(ZERO_STR);