diff --git a/org.eclipse.jdt.launching.macosx/pom.xml b/org.eclipse.jdt.launching.macosx/pom.xml
index d2a033f..b66cd68 100644
--- a/org.eclipse.jdt.launching.macosx/pom.xml
+++ b/org.eclipse.jdt.launching.macosx/pom.xml
@@ -33,7 +33,7 @@
             <environment>
               <os>macosx</os>
               <ws>cocoa</ws>
-              <arch>x86</arch>
+              <arch>x86_64</arch>
             </environment>
           </environments>
         </configuration>
diff --git a/org.eclipse.jdt.launching.ui.macosx/pom.xml b/org.eclipse.jdt.launching.ui.macosx/pom.xml
index 67124e0..b154637 100644
--- a/org.eclipse.jdt.launching.ui.macosx/pom.xml
+++ b/org.eclipse.jdt.launching.ui.macosx/pom.xml
@@ -33,7 +33,7 @@
             <environment>
               <os>macosx</os>
               <ws>cocoa</ws>
-              <arch>x86</arch>
+              <arch>x86_64</arch>
             </environment>
           </environments>
         </configuration>