diff --git a/mobile/android/config/mozconfigs/common b/mobile/android/config/mozconfigs/common
index 246a49b27d9b..219bb027ac47 100644
--- a/mobile/android/config/mozconfigs/common
+++ b/mobile/android/config/mozconfigs/common
@@ -15,7 +15,7 @@ ac_add_options --enable-elf-hack
 
 ANDROID_NDK_VERSION="r8e"
 ANDROID_NDK_VERSION_32BIT="r8c"
-ANDROID_SDK_VERSION="20"
+ANDROID_SDK_VERSION="21"
 
 # Build Fennec
 ac_add_options --enable-application=mobile/android
diff --git a/mobile/android/config/tooltool-manifests/android-armv6/releng.manifest b/mobile/android/config/tooltool-manifests/android-armv6/releng.manifest
index d2f3e4c44d10..003255a8ed7b 100644
--- a/mobile/android/config/tooltool-manifests/android-armv6/releng.manifest
+++ b/mobile/android/config/tooltool-manifests/android-armv6/releng.manifest
@@ -6,8 +6,8 @@
 "filename": "android-ndk.tar.bz2"
 },
 {
-"size": 207966812,
-"digest": "9f6d50e5e67e6a6784dea3b5573178a869b017d2d0c7588af9eb53fdd23c7d1bd6f775f07a9ad1510ba36bf1608d21baa4e26e92afe61e190429870a6371b97d",
+"size": 227988048,
+"digest": "c84db0abd1f4fda1bb38292ef561e211e1e6b99586764fd8cf0829fa4d0c6a605eb21e1eb5462465fcca64749d48e22ac1b13029e2623bbdfe103801f5ef1411",
 "algorithm": "sha512",
 "filename": "android-sdk.tar.xz"
 },
diff --git a/mobile/android/config/tooltool-manifests/android-x86/releng.manifest b/mobile/android/config/tooltool-manifests/android-x86/releng.manifest
index 256d5715911f..a8d8ce5224d8 100644
--- a/mobile/android/config/tooltool-manifests/android-x86/releng.manifest
+++ b/mobile/android/config/tooltool-manifests/android-x86/releng.manifest
@@ -6,8 +6,8 @@
 "filename": "android-ndk.tar.bz2"
 },
 {
-"size": 207966812,
-"digest": "9f6d50e5e67e6a6784dea3b5573178a869b017d2d0c7588af9eb53fdd23c7d1bd6f775f07a9ad1510ba36bf1608d21baa4e26e92afe61e190429870a6371b97d",
+"size": 227988048,
+"digest": "c84db0abd1f4fda1bb38292ef561e211e1e6b99586764fd8cf0829fa4d0c6a605eb21e1eb5462465fcca64749d48e22ac1b13029e2623bbdfe103801f5ef1411",
 "algorithm": "sha512",
 "filename": "android-sdk.tar.xz"
 },
diff --git a/mobile/android/config/tooltool-manifests/android/releng.manifest b/mobile/android/config/tooltool-manifests/android/releng.manifest
index d2f3e4c44d10..003255a8ed7b 100644
--- a/mobile/android/config/tooltool-manifests/android/releng.manifest
+++ b/mobile/android/config/tooltool-manifests/android/releng.manifest
@@ -6,8 +6,8 @@
 "filename": "android-ndk.tar.bz2"
 },
 {
-"size": 207966812,
-"digest": "9f6d50e5e67e6a6784dea3b5573178a869b017d2d0c7588af9eb53fdd23c7d1bd6f775f07a9ad1510ba36bf1608d21baa4e26e92afe61e190429870a6371b97d",
+"size": 227988048,
+"digest": "c84db0abd1f4fda1bb38292ef561e211e1e6b99586764fd8cf0829fa4d0c6a605eb21e1eb5462465fcca64749d48e22ac1b13029e2623bbdfe103801f5ef1411",
 "algorithm": "sha512",
 "filename": "android-sdk.tar.xz"
 },