--- a/stx_libbasic2.st	Fri Jun 23 11:47:07 2017 +0200
+++ b/stx_libbasic2.st	Fri Jun 23 11:47:47 2017 +0200
@@ -372,6 +372,20 @@
         ArithmeticValue quotientFromQDouble:
         ArithmeticValue remainderFromQDouble:
         ArithmeticValue sumFromQDouble:
+        Block deferredValue
+        Block deferredValueAt:
+        Block futureValue
+        Block futureValue:
+        Block futureValue:value:
+        Block futureValue:value:value:
+        Block futureValueWithArguments:
+        Block lazyValue
+        Block lazyValue:
+        Block lazyValue:value:
+        Block lazyValue:value:value:
+        Block lazyValueWithArguments:
+        Block promise
+        Block promiseAt:
         CharacterArray asKoelnerPhoneticCode
         CharacterArray asSoundexCode
         CharacterArray printf: