diff --git a/build.gradle b/build.gradle
index 462ac6bb..2885564b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -141,6 +141,15 @@ subprojects {
                 srcDir projectDir
             }
         }
+        jmh {
+            java {
+                srcDir projectDir
+            }
+        }
+    }
+
+    jmh {
+        jmhVersion = '1.12'
     }
 
     List createdTasks = []
@@ -214,6 +223,7 @@ subprojects {
 configure(subprojects - project(':onjava')) {
     dependencies {
         compile project(':onjava')
+        compile 'org.openjdk.jmh:jmh-core:1.12'
     }
 }
 
diff --git a/understandingcollections/build.gradle b/understandingcollections/build.gradle
index 3f51fbe8..1db84bc1 100644
--- a/understandingcollections/build.gradle
+++ b/understandingcollections/build.gradle
@@ -2,3 +2,7 @@ dependencies {
     compile project(':typeinfo')
     compile project(':collections')
 }
+
+jmh {
+    include = 'understandingcollections.jmhtests.*'
+}