--- a/python/mozboot/mozboot/android.py
+++ b/python/mozboot/mozboot/android.py
@@ -253,18 +253,18 @@ def ensure_android_packages(android_tool
 
 def suggest_mozconfig(sdk_path=None, ndk_path=None, artifact_mode=False):
     if artifact_mode:
         print(MOBILE_ANDROID_ARTIFACT_MODE_MOZCONFIG_TEMPLATE % (sdk_path))
     else:
         print(MOBILE_ANDROID_MOZCONFIG_TEMPLATE % (sdk_path, ndk_path))
 
 
-def android_ndk_url(os_name, ver='r11b'):
-    # Produce a URL like 'https://dl.google.com/android/repository/android-ndk-r11b-linux-x86_64.zip
+def android_ndk_url(os_name, ver='r11c'):
+    # Produce a URL like 'https://dl.google.com/android/repository/android-ndk-r11c-linux-x86_64.zip
     base_url = 'https://dl.google.com/android/repository/android-ndk'
 
     if sys.maxsize > 2**32:
         arch = 'x86_64'
     else:
         arch = 'x86'
 
     return '%s-%s-%s-%s.zip' % (base_url, ver, os_name, arch)

--- a/python/mozboot/mozboot/archlinux.py
+++ b/python/mozboot/mozboot/archlinux.py
@@ -117,20 +117,20 @@ class ArchlinuxBootstrapper(BaseBootstra
                   'toolchain requires 32 bit binaries be enabled (see '
                   'https://wiki.archlinux.org/index.php/Android).  You may need to '
                   'manually enable the multilib repository following the instructions '
                   'at https://wiki.archlinux.org/index.php/Multilib.')
             raise e
 
         # 2. The user may have an external Android SDK (in which case we save
         # them a lengthy download), or they may have already completed the
-        # download. We unpack to ~/.mozbuild/{android-sdk-linux, android-ndk-r11b}.
+        # download. We unpack to ~/.mozbuild/{android-sdk-linux, android-ndk-r11c}.
         mozbuild_path = os.environ.get('MOZBUILD_STATE_PATH', os.path.expanduser(os.path.join('~', '.mozbuild')))
         self.sdk_path = os.environ.get('ANDROID_SDK_HOME', os.path.join(mozbuild_path, 'android-sdk-linux'))
-        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11b'))
+        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11c'))
         self.sdk_url = 'https://dl.google.com/android/android-sdk_r24.0.1-linux.tgz'
         self.ndk_url = android.android_ndk_url('linux')
 
         android.ensure_android_sdk_and_ndk(path=mozbuild_path,
                                            sdk_path=self.sdk_path, sdk_url=self.sdk_url,
                                            ndk_path=self.ndk_path, ndk_url=self.ndk_url,
                                            artifact_mode=artifact_mode)
         android_tool = os.path.join(self.sdk_path, 'tools', 'android')

--- a/python/mozboot/mozboot/centosfedora.py
+++ b/python/mozboot/mozboot/centosfedora.py
@@ -119,17 +119,17 @@ class CentOSFedoraBootstrapper(BaseBoots
         import android
 
         # Install Android specific packages.
         self.dnf_install(*self.mobile_android_packages)
 
         # Fetch Android SDK and NDK.
         mozbuild_path = os.environ.get('MOZBUILD_STATE_PATH', os.path.expanduser(os.path.join('~', '.mozbuild')))
         self.sdk_path = os.environ.get('ANDROID_SDK_HOME', os.path.join(mozbuild_path, 'android-sdk-linux'))
-        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11b'))
+        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11c'))
         self.sdk_url = 'https://dl.google.com/android/android-sdk_r24.0.1-linux.tgz'
         self.ndk_url = android.android_ndk_url('linux')
 
         android.ensure_android_sdk_and_ndk(path=mozbuild_path,
                                            sdk_path=self.sdk_path, sdk_url=self.sdk_url,
                                            ndk_path=self.ndk_path, ndk_url=self.ndk_url,
                                            artifact_mode=artifact_mode)
 

--- a/python/mozboot/mozboot/debian.py
+++ b/python/mozboot/mozboot/debian.py
@@ -129,20 +129,20 @@ class DebianBootstrapper(BaseBootstrappe
         # http://developer.android.com/sdk/installing/index.html?pkg=tools.
         self.run_as_root(['dpkg', '--add-architecture', 'i386'])
         # After adding a new arch, the list of packages has to be updated
         self.apt_update()
         self.apt_install(*self.mobile_android_packages)
 
         # 2. The user may have an external Android SDK (in which case we save
         # them a lengthy download), or they may have already completed the
-        # download. We unpack to ~/.mozbuild/{android-sdk-linux, android-ndk-r11b}.
+        # download. We unpack to ~/.mozbuild/{android-sdk-linux, android-ndk-r11c}.
         mozbuild_path = os.environ.get('MOZBUILD_STATE_PATH', os.path.expanduser(os.path.join('~', '.mozbuild')))
         self.sdk_path = os.environ.get('ANDROID_SDK_HOME', os.path.join(mozbuild_path, 'android-sdk-linux'))
-        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11b'))
+        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11c'))
         self.sdk_url = 'https://dl.google.com/android/android-sdk_r24.0.1-linux.tgz'
         self.ndk_url = android.android_ndk_url('linux')
 
         android.ensure_android_sdk_and_ndk(path=mozbuild_path,
                                            sdk_path=self.sdk_path, sdk_url=self.sdk_url,
                                            ndk_path=self.ndk_path, ndk_url=self.ndk_url,
                                            artifact_mode=artifact_mode)
 

--- a/python/mozboot/mozboot/osx.py
+++ b/python/mozboot/mozboot/osx.py
@@ -355,20 +355,20 @@ class OSXBootstrapper(BaseBootstrapper):
             ('java', 'java'),
         ]
         installed = self._ensure_homebrew_casks(casks)
         if installed:
             print(JAVA_LICENSE_NOTICE)  # We accepted a license agreement for the user.
 
         # 2. The user may have an external Android SDK (in which case we save
         # them a lengthy download), or they may have already completed the
-        # download. We unpack to ~/.mozbuild/{android-sdk-linux, android-ndk-r11b}.
+        # download. We unpack to ~/.mozbuild/{android-sdk-linux, android-ndk-r11c}.
         mozbuild_path = os.environ.get('MOZBUILD_STATE_PATH', os.path.expanduser(os.path.join('~', '.mozbuild')))
         self.sdk_path = os.environ.get('ANDROID_SDK_HOME', os.path.join(mozbuild_path, 'android-sdk-macosx'))
-        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11b'))
+        self.ndk_path = os.environ.get('ANDROID_NDK_HOME', os.path.join(mozbuild_path, 'android-ndk-r11c'))
         self.sdk_url = 'https://dl.google.com/android/android-sdk_r24.0.1-macosx.zip'
         is_64bits = sys.maxsize > 2**32
         if is_64bits:
             self.ndk_url = android.android_ndk_url('darwin')
         else:
             raise Exception('You need a 64-bit version of Mac OS X to build Firefox for Android.')
 
         android.ensure_android_sdk_and_ndk(path=mozbuild_path,