diff --git a/buildserver/config.buildserver.yml b/buildserver/config.buildserver.yml
index cc139f96..2a3cb3fa 100644
--- a/buildserver/config.buildserver.yml
+++ b/buildserver/config.buildserver.yml
@@ -1,16 +1,6 @@
 sdk_path: /home/vagrant/android-sdk
 ndk_paths:
   r10e: /home/vagrant/android-ndk/r10e
-  r11c: /home/vagrant/android-ndk/r11c
-  r12b: /home/vagrant/android-ndk/r12b
-  r13b: /home/vagrant/android-ndk/r13b
-  r14b: /home/vagrant/android-ndk/r14b
-  r15c: /home/vagrant/android-ndk/r15c
-  r16b: /home/vagrant/android-ndk/r16b
-  r17c: /home/vagrant/android-ndk/r17c
-  r18b: /home/vagrant/android-ndk/r18b
-  r19c: /home/vagrant/android-ndk/r19c
-  r20b: /home/vagrant/android-ndk/r20b
   r21e: /home/vagrant/android-ndk/r21e
   r22b: /home/vagrant/android-ndk/r22b
 
diff --git a/buildserver/provision-android-ndk b/buildserver/provision-android-ndk
index 754dd797..1fcabf93 100644
--- a/buildserver/provision-android-ndk
+++ b/buildserver/provision-android-ndk
@@ -15,7 +15,7 @@ if [ ! -e $NDK_BASE/r10e ]; then
     mv android-ndk-r10e r10e
 fi
 
-for version in r11c r12b r13b r14b r15c r16b r17c r18b r19c r20b r21e r22b; do
+for version in r21e r22b; do
     if [ ! -e ${NDK_BASE}/${version} ]; then
         unzip /vagrant/cache/android-ndk-${version}-linux-x86_64.zip > /dev/null
         mv android-ndk-${version} ${version}
diff --git a/makebuildserver b/makebuildserver
index 01b45a30..4f1864a8 100755
--- a/makebuildserver
+++ b/makebuildserver
@@ -293,26 +293,6 @@ CACHE_FILES = [
      '0e46229820205440b48a5501122002842b82886e76af35f0f3a069243dca4b3c'),
     ('https://dl.google.com/android/ndk/android-ndk-r10e-linux-x86_64.bin',
      '102d6723f67ff1384330d12c45854315d6452d6510286f4e5891e00a5a8f1d5a'),
-    ('https://dl.google.com/android/repository/android-ndk-r11c-linux-x86_64.zip',
-     'ba85dbe4d370e4de567222f73a3e034d85fc3011b3cbd90697f3e8dcace3ad94'),
-    ('https://dl.google.com/android/repository/android-ndk-r12b-linux-x86_64.zip',
-     'eafae2d614e5475a3bcfd7c5f201db5b963cc1290ee3e8ae791ff0c66757781e'),
-    ('https://dl.google.com/android/repository/android-ndk-r13b-linux-x86_64.zip',
-     '3524d7f8fca6dc0d8e7073a7ab7f76888780a22841a6641927123146c3ffd29c'),
-    ('https://dl.google.com/android/repository/android-ndk-r14b-linux-x86_64.zip',
-     '0ecc2017802924cf81fffc0f51d342e3e69de6343da892ac9fa1cd79bc106024'),
-    ('https://dl.google.com/android/repository/android-ndk-r15c-linux-x86_64.zip',
-     'f01788946733bf6294a36727b99366a18369904eb068a599dde8cca2c1d2ba3c'),
-    ('https://dl.google.com/android/repository/android-ndk-r16b-linux-x86_64.zip',
-     'bcdea4f5353773b2ffa85b5a9a2ae35544ce88ec5b507301d8cf6a76b765d901'),
-    ('https://dl.google.com/android/repository/android-ndk-r17c-linux-x86_64.zip',
-     '3f541adbd0330a9205ba12697f6d04ec90752c53d6b622101a2a8a856e816589'),
-    ('https://dl.google.com/android/repository/android-ndk-r18b-linux-x86_64.zip',
-     '4f61cbe4bbf6406aa5ef2ae871def78010eed6271af72de83f8bd0b07a9fd3fd'),
-    ('https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip',
-     '4c62514ec9c2309315fd84da6d52465651cdb68605058f231f1e480fcf2692e1'),
-    ('https://dl.google.com/android/repository/android-ndk-r20b-linux-x86_64.zip',
-     '8381c440fe61fcbb01e209211ac01b519cd6adf51ab1c2281d5daad6ca4c8c8c'),
     ('https://dl.google.com/android/repository/android-ndk-r21e-linux-x86_64.zip',
      'ad7ce5467e18d40050dc51b8e7affc3e635c85bd8c59be62de32352328ed467e'),
     ('https://dl.google.com/android/repository/android-ndk-r22b-linux-x86_64.zip',