diff --git a/00-base/requirements.txt b/00-base/requirements.txt
index 594a28b..68e0722 100644
--- a/00-base/requirements.txt
+++ b/00-base/requirements.txt
@@ -12,13 +12,43 @@ jinja2==2.11.3 \
     --hash=sha256:a6d58433de0ae800347cab1fa3043cebbabe8baa9d29e668f1c768cb87a333c6
 jsonpickle==0.9.5 \
     --hash=sha256:cc25dc79571d4ad7db59d05ddb7de0d76a8d598cf6136e1dbeaa9361ebcfe749
-lxml==3.5.0 \
-    --hash=sha256:2d46192109bf662413febb54fe3a3354d564bc274dd5454755b39d6a8f1f0697 \
-    --hash=sha256:3178c8fbe9a7b5356edf7d351fc97cd653527e2f90fe717ba42bdce24746137d \
-    --hash=sha256:349f93e3a4b09cc59418854ab8013d027d246757c51744bf20069bc89016f578 \
-    --hash=sha256:3caadf90ba3f0442f4f75e8b6c5601b70bf17f94d41ded92232757de257ed084 \
-    --hash=sha256:f1ee626db1365fc789dc5b3807cb7ea50a0d004d60404288a97e9424daa45cfd \
-    --hash=sha256:f4253563021feb84aa2d4c06443418099b07356c59a3f4a77fd7eaf36d54642e
+lxml==4.6.3 \
+    --hash=sha256:df7c53783a46febb0e70f6b05df2ba104610f2fb0d27023409734a3ecbb78fb2 \
+    --hash=sha256:1b7584d421d254ab86d4f0b13ec662a9014397678a7c4265a02a6d7c2b18a75f \
+    --hash=sha256:079f3ae844f38982d156efce585bc540c16a926d4436712cf4baee0cce487a3d \
+    --hash=sha256:7728e05c35412ba36d3e9795ae8995e3c86958179c9770e65558ec3fdfd3724f \
+    --hash=sha256:4bff24dfeea62f2e56f5bab929b4428ae6caba2d1eea0c2d6eb618e30a71e6d4 \
+    --hash=sha256:bc4313cbeb0e7a416a488d72f9680fffffc645f8a838bd2193809881c67dd106 \
+    --hash=sha256:8157dadbb09a34a6bd95a50690595e1fa0af1a99445e2744110e3dca7831c4ee \
+    --hash=sha256:74f7d8d439b18fa4c385f3f5dfd11144bb87c1da034a466c5b5577d23a1d9b51 \
+    --hash=sha256:f90ba11136bfdd25cae3951af8da2e95121c9b9b93727b1b896e3fa105b2f586 \
+    --hash=sha256:f2380a6376dfa090227b663f9678150ef27543483055cc327555fb592c5967e2 \
+    --hash=sha256:c4f05c5a7c49d2fb70223d0d5bcfbe474cf928310ac9fa6a7c6dddc831d0b1d4 \
+    --hash=sha256:d2e35d7bf1c1ac8c538f88d26b396e73dd81440d59c1ef8522e1ea77b345ede4 \
+    --hash=sha256:289e9ca1a9287f08daaf796d96e06cb2bc2958891d7911ac7cae1c5f9e1e0ee3 \
+    --hash=sha256:bccbfc27563652de7dc9bdc595cb25e90b59c5f8e23e806ed0fd623755b6565d \
+    --hash=sha256:820628b7b3135403540202e60551e741f9b6d3304371712521be939470b454ec \
+    --hash=sha256:5a0a14e264069c03e46f926be0d8919f4105c1623d620e7ec0e612a2e9bf1c04 \
+    --hash=sha256:92e821e43ad382332eade6812e298dc9701c75fe289f2a2d39c7960b43d1e92a \
+    --hash=sha256:efd7a09678fd8b53117f6bae4fa3825e0a22b03ef0a932e070c0bdbb3a35e654 \
+    --hash=sha256:efac139c3f0bf4f0939f9375af4b02c5ad83a622de52d6dfa8e438e8e01d0eb0 \
+    --hash=sha256:0fbcf5565ac01dff87cbfc0ff323515c823081c5777a9fc7703ff58388c258c3 \
+    --hash=sha256:122fba10466c7bd4178b07dba427aa516286b846b2cbd6f6169141917283aae2 \
+    --hash=sha256:3439c71103ef0e904ea0a1901611863e51f50b5cd5e8654a151740fde5e1cade \
+    --hash=sha256:4289728b5e2000a4ad4ab8da6e1db2e093c63c08bdc0414799ee776a3f78da4b \
+    --hash=sha256:b007cbb845b28db4fb8b6a5cdcbf65bacb16a8bd328b53cbc0698688a68e1caa \
+    --hash=sha256:76fa7b1362d19f8fbd3e75fe2fb7c79359b0af8747e6f7141c338f0bee2f871a \
+    --hash=sha256:26e761ab5b07adf5f555ee82fb4bfc35bf93750499c6c7614bd64d12aaa67927 \
+    --hash=sha256:66e575c62792c3f9ca47cb8b6fab9e35bab91360c783d1606f758761810c9791 \
+    --hash=sha256:89b8b22a5ff72d89d48d0e62abb14340d9e99fd637d046c27b8b257a01ffbe28 \
+    --hash=sha256:2a9d50e69aac3ebee695424f7dbd7b8c6d6eb7de2a2eb6b0f6c7db6aa41e02b7 \
+    --hash=sha256:ce256aaa50f6cc9a649c51be3cd4ff142d67295bfc4f490c9134d0f9f6d58ef0 \
+    --hash=sha256:7610b8c31688f0b1be0ef882889817939490a36d0ee880ea562a4e1399c447a1 \
+    --hash=sha256:f8380c03e45cf09f8557bdaa41e1fa7c81f3ae22828e1db470ab2a6c96d8bc23 \
+    --hash=sha256:884ab9b29feaca361f7f88d811b1eea9bfca36cf3da27768d28ad45c3ee6f969 \
+    --hash=sha256:33bb934a044cf32157c12bfcfbb6649807da20aa92c062ef51903415c704704f \
+    --hash=sha256:542d454665a3e277f76954418124d67516c5f88e51a900365ed54a9806122b83 \
+    --hash=sha256:39b78571b3b30645ac77b95f7c69d1bffc4cf8c3b157c435a34da72e78c82468
 markupsafe==1.0 \
     --hash=sha256:a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665 \
     # via jinja2