diff --git a/BUILDING.txt b/BUILDING.txt
index bbad5efb22..621a221edc 100644
--- a/BUILDING.txt
+++ b/BUILDING.txt
@@ -8,7 +8,7 @@ Requirements:
 * Maven 3.0 or later
 * Findbugs 1.3.9 (if running findbugs)
 * ProtocolBuffer 2.5.0
-* CMake 2.6 or newer (if compiling native code)
+* CMake 2.6 or newer (if compiling native code), must be 3.0 or newer on Mac
 * Zlib devel (if compiling native code)
 * openssl devel ( if compiling native hadoop-pipes )
 * Internet connection for first build (to fetch all Maven and Hadoop dependencies)
diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 9d0816f041..f90a988427 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -895,6 +895,9 @@ Release 2.6.0 - UNRELEASED
     HADOOP-11049. javax package system class default is too broad (Sangjin Lee
     via jlowe)
 
+    HADOOP-11154. Update BUILDING.txt to state that CMake 3.0 or newer is
+    required on Mac. (cnauroth)
+
 Release 2.5.1 - 2014-09-05
 
   INCOMPATIBLE CHANGES