Android studio, gradle dex failed

Estoy tratando de construir mi proyecto androide con gradle pero sigo recibiendo este mensaje fallido que realmente puedo entender, cuando no estoy usando gradle todo está funcionando bien, ¿qué estoy haciendo mal?

:Wrap:dexDebug UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: method ID not in [0, 0xffff]: 65536 at com.android.dx.merge.DexMerger$6.updateIndex(DexMerger.java:501) at com.android.dx.merge.DexMerger$IdMerger.mergeSorted(DexMerger.java:276) at com.android.dx.merge.DexMerger.mergeMethodIds(DexMerger.java:490) at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:167) at com.android.dx.merge.DexMerger.merge(DexMerger.java:188) at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439) at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287) at com.android.dx.command.dexer.Main.run(Main.java:230) at com.android.dx.command.dexer.Main.main(Main.java:199) at com.android.dx.command.Main.main(Main.java:103) FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':Wrap:dexDebug'. > com.android.ide.common.internal.LoggedErrorException: Failed to run command: /Users/nirkeren/Downloads/adt-bundle-mac-x86_64-20131030/sdk/build-tools/19.0.3/dx --dex --output /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/dex/debug /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/classes/debug /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/dependency-cache/debug /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/activation-371528ff37ca00b95f4aaa30e7ada077808b4066.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/additionnal-cbe08f392e3489e0bbc657eaa6e1b2c578c8c63a.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/aws-android-sdk-1.7.1.1-1063abd88670acb74ffa18e83bed84e1185d156e.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/classes-00b425e022f3e5825d218bf8230a3518488661ad.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/classes-1536774be9f5f226247f33ff39444641cbae5f17.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/classes-319df0e8b970ed8444fa4ad2a35d7b04d8635cf7.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/classes-3a528328da2ecd26bde330cd6e96a93681e37443.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/classes-88cca99f18ad79854e456d941016a7ba2d89778b.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/classes-b427cc929fd1399dd3b95eb4f41a07465f532aaf.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/classes-b7ec143e0b6817ac519f67d77d80b2574ceaac79.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/crashlytics-a9be38ef9142a13510daa326a3e74e79ec26fe81.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-api-client-1.15.0-rc-e5d0bfc007123ab793084359d1ef33a23786b1cc.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-api-client-android-1.15.0-rc-91914619bb0c2177957554eee1e41988a12b4111.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-api-services-drive-v2-rev76-1.15.0-rc-9fc7b1dbf3fa9980bb1471a02e67a59ea7b0e7e4.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-http-client-1.15.0-rc-c609d62345e69e29cff2e79286c99b2287dc1935.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-http-client-android-1.15.0-rc-219670662f5d9c8793501be852143a90ad8bcfc9.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-http-client-gson-1.15.0-rc-2bc2a42d04283a6e31550ba6fb50a545a295e1d7.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-oauth-client-1.15.0-rc-3de236b42e6497978cf52f309ed16c0dd47a7e4a.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/google-play-services-d4c8a0bc9c8586e19cc569471ba95580ff827f24.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/gson-2.1-5dd6330840355abbdb328e202fb7a1b601c11625.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/httpclient-4.0.1-6d6f0a4ccfe934c72fcd285cd0bd138903838075.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/httpcore-4.0.1-651bf829da8a88ebcba183426bdc2a5816a8a8f8.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/jsr305-1.3.9-17a8eef10544db30421f617a1a74033dc44e0b5a.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/libGoogleAnalyticsServices-20f33d61149fc3986571664bce4d5a71b7375d77.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/library-2.4.0-cf8b4e3adb01d32f9c0a19763d14e0d5a6fc58cb.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/mail-368bf8fea3a96aaffa7fe8eb7a39f1c975584527.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/opencsv-2.3-60231b26d86a13ba9a7e4d523848b462313d909f.jar /Users/nirkeren/projects/ONDiGO_1_1_0/Wrap/build/pre-dexed/debug/support-v4-19.1.0-00876ab3fdbf97f4dfe545f08a39e533888e15b1.jar Error Code: 2 Output: UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.IllegalArgumentException: method ID not in [0, 0xffff]: 65536 at com.android.dx.merge.DexMerger$6.updateIndex(DexMerger.java:501) at com.android.dx.merge.DexMerger$IdMerger.mergeSorted(DexMerger.java:276) at com.android.dx.merge.DexMerger.mergeMethodIds(DexMerger.java:490) at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:167) at com.android.dx.merge.DexMerger.merge(DexMerger.java:188) at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439) at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287) at com.android.dx.command.dexer.Main.run(Main.java:230) at com.android.dx.command.dexer.Main.main(Main.java:199) at com.android.dx.command.Main.main(Main.java:103) * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. BUILD FAILED 

Su proyecto es demasiado grande. Tienes demasiados métodos. Sólo puede haber 65536 métodos por aplicación. Intente reducir los métodos innecesarios o actualice su biblioteca de soporte técnico de Android a la revisión 21

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