diff --git a/appveyor.yml b/appveyor.yml
index 281d7d5ce1..ebb097b5ad 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -16,10 +16,13 @@ install:
   - C:\msys64\usr\bin\bash -lc "curl -O http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"
   - C:\msys64\usr\bin\bash -lc "pacman-key --verify msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"
   - C:\msys64\usr\bin\bash -lc "pacman -U --noconfirm msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
-  - ps: Get-Process | Where-Object {$_.path -like 'C:\msys64*'} | Stop-Process
+    # Update zstd and pacman https://github.com/msys2/MSYS2-packages/issues/2300
+  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm --upgrade https://repo.msys2.org/msys/x86_64/zstd-1.4.7-1-x86_64.pkg.tar.xz"
+  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm --upgrade https://repo.msys2.org/msys/x86_64/pacman-5.2.2-5-x86_64.pkg.tar.xz"
   - C:\msys64\usr\bin\bash -lc "pacman --needed --noconfirm -Sy pacman-mirrors"
-  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -Su"
-  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -S autoconf automake bison flex git"
+  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -Syuu"
+  - ps: Get-Process | Where-Object {$_.path -like 'C:\msys64*'} | Stop-Process
+  - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -Sy autoconf automake bison flex git"
   - C:\msys64\usr\bin\bash -lc "pip3 install --upgrade pipenv"
   - C:\msys64\usr\bin\bash -lc "cd $APPVEYOR_BUILD_FOLDER/docs && pipenv sync"
 
diff --git a/docs/Pipfile.lock b/docs/Pipfile.lock
index 3c1d2d477e..d253ea4b0e 100644
--- a/docs/Pipfile.lock
+++ b/docs/Pipfile.lock
@@ -16,101 +16,154 @@
     "default": {
         "jinja2": {
             "hashes": [
-                "sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd",
-                "sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4"
+                "sha256:03e47ad063331dd6a3f04a43eddca8a966a26ba0c5b7207a9a9e4e08f1b29419",
+                "sha256:a6d58433de0ae800347cab1fa3043cebbabe8baa9d29e668f1c768cb87a333c6"
             ],
             "index": "pypi",
-            "version": "==2.10"
+            "version": "==2.11.3"
         },
         "lxml": {
             "hashes": [
-                "sha256:0537eee4902e8bf4f41bfee8133f7edf96533dd175930a12086d6a40d62376b2",
-                "sha256:0562ec748abd230ab87d73384e08fa784f9b9cee89e28696087d2d22c052cc27",
-                "sha256:09e91831e749fbf0f24608694e4573be0ef51430229450c39c83176cc2e2d353",
-                "sha256:1ae4c0722fc70c0d4fba43ae33c2885f705e96dce1db41f75ae14a2d2749b428",
-                "sha256:1c630c083d782cbaf1f7f37f6cac87bda9cff643cf2803a5f180f30d97955cef",
-                "sha256:2fe74e3836bd8c0fa7467ffae05545233c7f37de1eb765cacfda15ad20c6574a",
-                "sha256:37af783c2667ead34a811037bda56a0b142ac8438f7ed29ae93f82ddb812fbd6",
-                "sha256:3f2d9eafbb0b24a33f56acd16f39fc935756524dcb3172892721c54713964c70",
-                "sha256:47d8365a8ef14097aa4c65730689be51851b4ade677285a3b2daa03b37893e26",
-                "sha256:510e904079bc56ea784677348e151e1156040dbfb736f1d8ea4b9e6d0ab2d9f4",
-                "sha256:58d0851da422bba31c7f652a7e9335313cf94a641aa6d73b8f3c67602f75b593",
-                "sha256:7940d5c2185ffb989203dacbb28e6ae88b4f1bb25d04e17f94b0edd82232bcbd",
-                "sha256:7cf39bb3a905579836f7a8f3a45320d9eb22f16ab0c1e112efb940ced4d057a5",
-                "sha256:9563a23c1456c0ab550c087833bc13fcc61013a66c6420921d5b70550ea312bf",
-                "sha256:95b392952935947e0786a90b75cc33388549dcb19af716b525dae65b186138fc",
-                "sha256:983129f3fd3cef5c3cf067adcca56e30a169656c00fcc6c648629dbb850b27fa",
-                "sha256:a0b75b1f1854771844c647c464533def3e0a899dd094a85d1d4ed72ecaaee93d",
-                "sha256:b5db89cc0ef624f3a81214b7961a99f443b8c91e88188376b6b322fd10d5b118",
-                "sha256:c0a7751ba1a4bfbe7831920d98cee3ce748007eab8dfda74593d44079568219a",
-                "sha256:c0c5a7d4aafcc30c9b6d8613a362567e32e5f5b708dc41bc3a81dac56f8af8bb",
-                "sha256:d4d63d85eacc6cb37b459b16061e1f100d154bee89dc8d8f9a6128a5a538e92e",
-                "sha256:da5e7e941d6e71c9c9a717c93725cda0708c2474f532e3680ac5e39ec57d224d",
-                "sha256:dccad2b3c583f036f43f80ac99ee212c2fa9a45151358d55f13004d095e683b2",
-                "sha256:df46307d39f2aeaafa1d25309b8a8d11738b73e9861f72d4d0a092528f498baa",
-                "sha256:e70b5e1cb48828ddd2818f99b1662cb9226dc6f57d07fc75485405c77da17436",
-                "sha256:ea825562b8cd057cbc9810d496b8b5dec37a1e2fc7b27bc7c1e72ce94462a09a"
+                "sha256:079f3ae844f38982d156efce585bc540c16a926d4436712cf4baee0cce487a3d",
+                "sha256:0fbcf5565ac01dff87cbfc0ff323515c823081c5777a9fc7703ff58388c258c3",
+                "sha256:122fba10466c7bd4178b07dba427aa516286b846b2cbd6f6169141917283aae2",
+                "sha256:1b7584d421d254ab86d4f0b13ec662a9014397678a7c4265a02a6d7c2b18a75f",
+                "sha256:26e761ab5b07adf5f555ee82fb4bfc35bf93750499c6c7614bd64d12aaa67927",
+                "sha256:289e9ca1a9287f08daaf796d96e06cb2bc2958891d7911ac7cae1c5f9e1e0ee3",
+                "sha256:2a9d50e69aac3ebee695424f7dbd7b8c6d6eb7de2a2eb6b0f6c7db6aa41e02b7",
+                "sha256:33bb934a044cf32157c12bfcfbb6649807da20aa92c062ef51903415c704704f",
+                "sha256:3439c71103ef0e904ea0a1901611863e51f50b5cd5e8654a151740fde5e1cade",
+                "sha256:39b78571b3b30645ac77b95f7c69d1bffc4cf8c3b157c435a34da72e78c82468",
+                "sha256:4289728b5e2000a4ad4ab8da6e1db2e093c63c08bdc0414799ee776a3f78da4b",
+                "sha256:4bff24dfeea62f2e56f5bab929b4428ae6caba2d1eea0c2d6eb618e30a71e6d4",
+                "sha256:542d454665a3e277f76954418124d67516c5f88e51a900365ed54a9806122b83",
+                "sha256:5a0a14e264069c03e46f926be0d8919f4105c1623d620e7ec0e612a2e9bf1c04",
+                "sha256:66e575c62792c3f9ca47cb8b6fab9e35bab91360c783d1606f758761810c9791",
+                "sha256:74f7d8d439b18fa4c385f3f5dfd11144bb87c1da034a466c5b5577d23a1d9b51",
+                "sha256:7610b8c31688f0b1be0ef882889817939490a36d0ee880ea562a4e1399c447a1",
+                "sha256:76fa7b1362d19f8fbd3e75fe2fb7c79359b0af8747e6f7141c338f0bee2f871a",
+                "sha256:7728e05c35412ba36d3e9795ae8995e3c86958179c9770e65558ec3fdfd3724f",
+                "sha256:8157dadbb09a34a6bd95a50690595e1fa0af1a99445e2744110e3dca7831c4ee",
+                "sha256:820628b7b3135403540202e60551e741f9b6d3304371712521be939470b454ec",
+                "sha256:884ab9b29feaca361f7f88d811b1eea9bfca36cf3da27768d28ad45c3ee6f969",
+                "sha256:89b8b22a5ff72d89d48d0e62abb14340d9e99fd637d046c27b8b257a01ffbe28",
+                "sha256:92e821e43ad382332eade6812e298dc9701c75fe289f2a2d39c7960b43d1e92a",
+                "sha256:b007cbb845b28db4fb8b6a5cdcbf65bacb16a8bd328b53cbc0698688a68e1caa",
+                "sha256:bc4313cbeb0e7a416a488d72f9680fffffc645f8a838bd2193809881c67dd106",
+                "sha256:bccbfc27563652de7dc9bdc595cb25e90b59c5f8e23e806ed0fd623755b6565d",
+                "sha256:c4f05c5a7c49d2fb70223d0d5bcfbe474cf928310ac9fa6a7c6dddc831d0b1d4",
+                "sha256:ce256aaa50f6cc9a649c51be3cd4ff142d67295bfc4f490c9134d0f9f6d58ef0",
+                "sha256:d2e35d7bf1c1ac8c538f88d26b396e73dd81440d59c1ef8522e1ea77b345ede4",
+                "sha256:df7c53783a46febb0e70f6b05df2ba104610f2fb0d27023409734a3ecbb78fb2",
+                "sha256:efac139c3f0bf4f0939f9375af4b02c5ad83a622de52d6dfa8e438e8e01d0eb0",
+                "sha256:efd7a09678fd8b53117f6bae4fa3825e0a22b03ef0a932e070c0bdbb3a35e654",
+                "sha256:f2380a6376dfa090227b663f9678150ef27543483055cc327555fb592c5967e2",
+                "sha256:f8380c03e45cf09f8557bdaa41e1fa7c81f3ae22828e1db470ab2a6c96d8bc23",
+                "sha256:f90ba11136bfdd25cae3951af8da2e95121c9b9b93727b1b896e3fa105b2f586"
             ],
             "index": "pypi",
-            "version": "==4.3.1"
+            "version": "==4.6.3"
         },
         "markdown": {
             "hashes": [
-                "sha256:c00429bd503a47ec88d5e30a751e147dcb4c6889663cd3e2ba0afe858e009baa",
-                "sha256:d02e0f9b04c500cde6637c11ad7c72671f359b87b9fe924b2383649d8841db7c"
+                "sha256:31b5b491868dcc87d6c24b7e3d19a0d730d59d3e46f4eea6430a321bed387a49",
+                "sha256:96c3ba1261de2f7547b46a00ea8463832c921d3f9d6aba3f255a6f71386db20c"
             ],
             "index": "pypi",
-            "version": "==3.0.1"
+            "version": "==3.3.4"
         },
         "markupsafe": {
             "hashes": [
-                "sha256:048ef924c1623740e70204aa7143ec592504045ae4429b59c30054cb31e3c432",
-                "sha256:130f844e7f5bdd8e9f3f42e7102ef1d49b2e6fdf0d7526df3f87281a532d8c8b",
-                "sha256:19f637c2ac5ae9da8bfd98cef74d64b7e1bb8a63038a3505cd182c3fac5eb4d9",
-                "sha256:1b8a7a87ad1b92bd887568ce54b23565f3fd7018c4180136e1cf412b405a47af",
-                "sha256:1c25694ca680b6919de53a4bb3bdd0602beafc63ff001fea2f2fc16ec3a11834",
-                "sha256:1f19ef5d3908110e1e891deefb5586aae1b49a7440db952454b4e281b41620cd",
-                "sha256:1fa6058938190ebe8290e5cae6c351e14e7bb44505c4a7624555ce57fbbeba0d",
-                "sha256:31cbb1359e8c25f9f48e156e59e2eaad51cd5242c05ed18a8de6dbe85184e4b7",
-                "sha256:3e835d8841ae7863f64e40e19477f7eb398674da6a47f09871673742531e6f4b",
-                "sha256:4e97332c9ce444b0c2c38dd22ddc61c743eb208d916e4265a2a3b575bdccb1d3",
-                "sha256:525396ee324ee2da82919f2ee9c9e73b012f23e7640131dd1b53a90206a0f09c",
-                "sha256:52b07fbc32032c21ad4ab060fec137b76eb804c4b9a1c7c7dc562549306afad2",
-                "sha256:52ccb45e77a1085ec5461cde794e1aa037df79f473cbc69b974e73940655c8d7",
-                "sha256:5c3fbebd7de20ce93103cb3183b47671f2885307df4a17a0ad56a1dd51273d36",
-                "sha256:5e5851969aea17660e55f6a3be00037a25b96a9b44d2083651812c99d53b14d1",
-                "sha256:5edfa27b2d3eefa2210fb2f5d539fbed81722b49f083b2c6566455eb7422fd7e",
-                "sha256:7d263e5770efddf465a9e31b78362d84d015cc894ca2c131901a4445eaa61ee1",
-                "sha256:83381342bfc22b3c8c06f2dd93a505413888694302de25add756254beee8449c",
-                "sha256:857eebb2c1dc60e4219ec8e98dfa19553dae33608237e107db9c6078b1167856",
-                "sha256:98e439297f78fca3a6169fd330fbe88d78b3bb72f967ad9961bcac0d7fdd1550",
-                "sha256:bf54103892a83c64db58125b3f2a43df6d2cb2d28889f14c78519394feb41492",
-                "sha256:d9ac82be533394d341b41d78aca7ed0e0f4ba5a2231602e2f05aa87f25c51672",
-                "sha256:e982fe07ede9fada6ff6705af70514a52beb1b2c3d25d4e873e82114cf3c5401",
-                "sha256:edce2ea7f3dfc981c4ddc97add8a61381d9642dc3273737e756517cc03e84dd6",
-                "sha256:efdc45ef1afc238db84cb4963aa689c0408912a0239b0721cb172b4016eb31d6",
-                "sha256:f137c02498f8b935892d5c0172560d7ab54bc45039de8805075e19079c639a9c",
-                "sha256:f82e347a72f955b7017a39708a3667f106e6ad4d10b25f237396a7115d8ed5fd",
-                "sha256:fb7c206e01ad85ce57feeaaa0bf784b97fa3cad0d4a5737bc5295785f5c613a1"
+                "sha256:00bc623926325b26bb9605ae9eae8a215691f33cae5df11ca5424f06f2d1f473",
+                "sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161",
+                "sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235",
+                "sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5",
+                "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42",
+                "sha256:195d7d2c4fbb0ee8139a6cf67194f3973a6b3042d742ebe0a9ed36d8b6f0c07f",
+                "sha256:22c178a091fc6630d0d045bdb5992d2dfe14e3259760e713c490da5323866c39",
+                "sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff",
+                "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b",
+                "sha256:2beec1e0de6924ea551859edb9e7679da6e4870d32cb766240ce17e0a0ba2014",
+                "sha256:3b8a6499709d29c2e2399569d96719a1b21dcd94410a586a18526b143ec8470f",
+                "sha256:43a55c2930bbc139570ac2452adf3d70cdbb3cfe5912c71cdce1c2c6bbd9c5d1",
+                "sha256:46c99d2de99945ec5cb54f23c8cd5689f6d7177305ebff350a58ce5f8de1669e",
+                "sha256:500d4957e52ddc3351cabf489e79c91c17f6e0899158447047588650b5e69183",
+                "sha256:535f6fc4d397c1563d08b88e485c3496cf5784e927af890fb3c3aac7f933ec66",
+                "sha256:596510de112c685489095da617b5bcbbac7dd6384aeebeda4df6025d0256a81b",
+                "sha256:62fe6c95e3ec8a7fad637b7f3d372c15ec1caa01ab47926cfdf7a75b40e0eac1",
+                "sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15",
+                "sha256:6dd73240d2af64df90aa7c4e7481e23825ea70af4b4922f8ede5b9e35f78a3b1",
+                "sha256:6f1e273a344928347c1290119b493a1f0303c52f5a5eae5f16d74f48c15d4a85",
+                "sha256:6fffc775d90dcc9aed1b89219549b329a9250d918fd0b8fa8d93d154918422e1",
+                "sha256:717ba8fe3ae9cc0006d7c451f0bb265ee07739daf76355d06366154ee68d221e",
+                "sha256:79855e1c5b8da654cf486b830bd42c06e8780cea587384cf6545b7d9ac013a0b",
+                "sha256:7c1699dfe0cf8ff607dbdcc1e9b9af1755371f92a68f706051cc8c37d447c905",
+                "sha256:7fed13866cf14bba33e7176717346713881f56d9d2bcebab207f7a036f41b850",
+                "sha256:84dee80c15f1b560d55bcfe6d47b27d070b4681c699c572af2e3c7cc90a3b8e0",
+                "sha256:88e5fcfb52ee7b911e8bb6d6aa2fd21fbecc674eadd44118a9cc3863f938e735",
+                "sha256:8defac2f2ccd6805ebf65f5eeb132adcf2ab57aa11fdf4c0dd5169a004710e7d",
+                "sha256:98bae9582248d6cf62321dcb52aaf5d9adf0bad3b40582925ef7c7f0ed85fceb",
+                "sha256:98c7086708b163d425c67c7a91bad6e466bb99d797aa64f965e9d25c12111a5e",
+                "sha256:9add70b36c5666a2ed02b43b335fe19002ee5235efd4b8a89bfcf9005bebac0d",
+                "sha256:9bf40443012702a1d2070043cb6291650a0841ece432556f784f004937f0f32c",
+                "sha256:a6a744282b7718a2a62d2ed9d993cad6f5f585605ad352c11de459f4108df0a1",
+                "sha256:acf08ac40292838b3cbbb06cfe9b2cb9ec78fce8baca31ddb87aaac2e2dc3bc2",
+                "sha256:ade5e387d2ad0d7ebf59146cc00c8044acbd863725f887353a10df825fc8ae21",
+                "sha256:b00c1de48212e4cc9603895652c5c410df699856a2853135b3967591e4beebc2",
+                "sha256:b1282f8c00509d99fef04d8ba936b156d419be841854fe901d8ae224c59f0be5",
+                "sha256:b1dba4527182c95a0db8b6060cc98ac49b9e2f5e64320e2b56e47cb2831978c7",
+                "sha256:b2051432115498d3562c084a49bba65d97cf251f5a331c64a12ee7e04dacc51b",
+                "sha256:b7d644ddb4dbd407d31ffb699f1d140bc35478da613b441c582aeb7c43838dd8",
+                "sha256:ba59edeaa2fc6114428f1637ffff42da1e311e29382d81b339c1817d37ec93c6",
+                "sha256:bf5aa3cbcfdf57fa2ee9cd1822c862ef23037f5c832ad09cfea57fa846dec193",
+                "sha256:c8716a48d94b06bb3b2524c2b77e055fb313aeb4ea620c8dd03a105574ba704f",
+                "sha256:caabedc8323f1e93231b52fc32bdcde6db817623d33e100708d9a68e1f53b26b",
+                "sha256:cd5df75523866410809ca100dc9681e301e3c27567cf498077e8551b6d20e42f",
+                "sha256:cdb132fc825c38e1aeec2c8aa9338310d29d337bebbd7baa06889d09a60a1fa2",
+                "sha256:d53bc011414228441014aa71dbec320c66468c1030aae3a6e29778a3382d96e5",
+                "sha256:d73a845f227b0bfe8a7455ee623525ee656a9e2e749e4742706d80a6065d5e2c",
+                "sha256:d9be0ba6c527163cbed5e0857c451fcd092ce83947944d6c14bc95441203f032",
+                "sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7",
+                "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be",
+                "sha256:feb7b34d6325451ef96bc0e36e1a6c0c1c64bc1fbec4b854f4529e51887b1621"
             ],
-            "version": "==1.1.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.1.1"
         },
         "pyyaml": {
             "hashes": [
-                "sha256:3d7da3009c0f3e783b2c873687652d83b1bbfd5c88e9813fb7e5b03c0dd3108b",
-                "sha256:3ef3092145e9b70e3ddd2c7ad59bdd0252a94dfe3949721633e41344de00a6bf",
-                "sha256:40c71b8e076d0550b2e6380bada1f1cd1017b882f7e16f09a65be98e017f211a",
-                "sha256:558dd60b890ba8fd982e05941927a3911dc409a63dcb8b634feaa0cda69330d3",
-                "sha256:a7c28b45d9f99102fa092bb213aa12e0aaf9a6a1f5e395d36166639c1f96c3a1",
-                "sha256:aa7dd4a6a427aed7df6fb7f08a580d68d9b118d90310374716ae90b710280af1",
-                "sha256:bc558586e6045763782014934bfaf39d48b8ae85a2713117d16c39864085c613",
-                "sha256:d46d7982b62e0729ad0175a9bc7e10a566fc07b224d2c79fafb5e032727eaa04",
-                "sha256:d5eef459e30b09f5a098b9cea68bebfeb268697f78d647bd255a085371ac7f3f",
-                "sha256:e01d3203230e1786cd91ccfdc8f8454c8069c91bee3962ad93b87a4b2860f537",
-                "sha256:e170a9e6fcfd19021dd29845af83bb79236068bf5fd4df3327c1be18182b2531"
+                "sha256:08682f6b72c722394747bddaf0aa62277e02557c0fd1c42cb853016a38f8dedf",
+                "sha256:0f5f5786c0e09baddcd8b4b45f20a7b5d61a7e7e99846e3c799b05c7c53fa696",
+                "sha256:129def1b7c1bf22faffd67b8f3724645203b79d8f4cc81f674654d9902cb4393",
+                "sha256:294db365efa064d00b8d1ef65d8ea2c3426ac366c0c4368d930bf1c5fb497f77",
+                "sha256:3b2b1824fe7112845700f815ff6a489360226a5609b96ec2190a45e62a9fc922",
+                "sha256:3bd0e463264cf257d1ffd2e40223b197271046d09dadf73a0fe82b9c1fc385a5",
+                "sha256:4465124ef1b18d9ace298060f4eccc64b0850899ac4ac53294547536533800c8",
+                "sha256:49d4cdd9065b9b6e206d0595fee27a96b5dd22618e7520c33204a4a3239d5b10",
+                "sha256:4e0583d24c881e14342eaf4ec5fbc97f934b999a6828693a99157fde912540cc",
+                "sha256:5accb17103e43963b80e6f837831f38d314a0495500067cb25afab2e8d7a4018",
+                "sha256:607774cbba28732bfa802b54baa7484215f530991055bb562efbed5b2f20a45e",
+                "sha256:6c78645d400265a062508ae399b60b8c167bf003db364ecb26dcab2bda048253",
+                "sha256:72a01f726a9c7851ca9bfad6fd09ca4e090a023c00945ea05ba1638c09dc3347",
+                "sha256:74c1485f7707cf707a7aef42ef6322b8f97921bd89be2ab6317fd782c2d53183",
+                "sha256:895f61ef02e8fed38159bb70f7e100e00f471eae2bc838cd0f4ebb21e28f8541",
+                "sha256:8c1be557ee92a20f184922c7b6424e8ab6691788e6d86137c5d93c1a6ec1b8fb",
+                "sha256:bb4191dfc9306777bc594117aee052446b3fa88737cd13b7188d0e7aa8162185",
+                "sha256:bfb51918d4ff3d77c1c856a9699f8492c612cde32fd3bcd344af9be34999bfdc",
+                "sha256:c20cfa2d49991c8b4147af39859b167664f2ad4561704ee74c1de03318e898db",
+                "sha256:cb333c16912324fd5f769fff6bc5de372e9e7a202247b48870bc251ed40239aa",
+                "sha256:d2d9808ea7b4af864f35ea216be506ecec180628aced0704e34aca0b040ffe46",
+                "sha256:d483ad4e639292c90170eb6f7783ad19490e7a8defb3e46f97dfe4bacae89122",
+                "sha256:dd5de0646207f053eb0d6c74ae45ba98c3395a571a2891858e87df7c9b9bd51b",
+                "sha256:e1d4970ea66be07ae37a3c2e48b5ec63f7ba6804bdddfdbd3cfd954d25a82e63",
+                "sha256:e4fac90784481d221a8e4b1162afa7c47ed953be40d31ab4629ae917510051df",
+                "sha256:fa5ae20527d8e831e8230cbffd9f8fe952815b2b7dae6ffec25318803a7528fc",
+                "sha256:fd7f6999a8070df521b6384004ef42833b9bd62cfee11a09bda1079b4b704247",
+                "sha256:fdc842473cd33f45ff6bce46aea678a54e3d21f1b61a7750ce3c498eedfe25d6",
+                "sha256:fe69978f3f768926cfa37b867e3843918e012cf83f680806599ddce33c2c68b0"
             ],
             "index": "pypi",
-            "version": "==3.13"
+            "version": "==5.4.1"
         }
     },
     "develop": {}
diff --git a/docs/build_manpage.py b/docs/build_manpage.py
index a0ab4edbe6..a3872960a6 100755
--- a/docs/build_manpage.py
+++ b/docs/build_manpage.py
@@ -11,8 +11,8 @@
 # Prevent our markdown parser from trying to help by interpreting things in angle brackets as HTML tags.
 class EscapeHtml(Extension):
   def extendMarkdown(self, md, md_globals):
-    del md.preprocessors['html_block']
-    del md.inlinePatterns['html']
+    md.preprocessors.deregister('html_block')
+    md.inlinePatterns.deregister('html')
 
 class RoffWalker(object):
   def __init__(self, tree, output=sys.stdout):
@@ -187,7 +187,7 @@ def __write_raw(self, dat):
 
 def load_yml_file(fn):
   with open(fn) as f:
-    return yaml.load(f)
+    return yaml.load(f, Loader=yaml.BaseLoader)
 
 def dedent_body(body):
   lines = [re.sub(r'^  (\S)', r'\1', l) for l in body.split('\n')]
diff --git a/docs/build_mantests.py b/docs/build_mantests.py
index 40f0dccf09..65e0d63f9e 100755
--- a/docs/build_mantests.py
+++ b/docs/build_mantests.py
@@ -2,7 +2,7 @@
 import yaml
 
 with open("content/manual/manual.yml") as f:
-  manual = yaml.load(f)
+  manual = yaml.load(f, Loader=yaml.BaseLoader)
   for section in manual.get('sections', []):
     for entry in section.get('entries', []):
       for example in entry.get('examples', []):
diff --git a/docs/build_website.py b/docs/build_website.py
index 7e04cc7bf1..f6608ba523 100755
--- a/docs/build_website.py
+++ b/docs/build_website.py
@@ -16,7 +16,7 @@
 
 def load_yml_file(fn):
   with open(fn) as f:
-    return yaml.load(f)
+    return yaml.load(f, Loader=yaml.BaseLoader)
 
 env.filters['search_id'] = lambda input: input.replace(r'`', '')
 env.filters['section_id'] = lambda input: re.sub(r"[^a-zA-Z0-9_]", '', input)
diff --git a/docs/content/manual/v1.5/manual.yml b/docs/content/manual/v1.5/manual.yml
index 62a68e9a64..72960b4b6a 100644
--- a/docs/content/manual/v1.5/manual.yml
+++ b/docs/content/manual/v1.5/manual.yml
@@ -1970,6 +1970,7 @@ sections:
           STRING | FILTER( [REGEX, FLAGS] )
 
       where:
+
       * STRING, REGEX and FLAGS are jq strings and subject to jq string interpolation;
       * REGEX, after string interpolation, should be a valid PCRE regex;
       * FILTER is one of `test`, `match`, or `capture`, as described below.
diff --git a/docs/content/manual/v1.6/manual.yml b/docs/content/manual/v1.6/manual.yml
index 7a14c89eff..dec3f3d55a 100644
--- a/docs/content/manual/v1.6/manual.yml
+++ b/docs/content/manual/v1.6/manual.yml
@@ -2216,6 +2216,7 @@ sections:
           STRING | FILTER( [REGEX, FLAGS] )
 
       where:
+
       * STRING, REGEX and FLAGS are jq strings and subject to jq string interpolation;
       * REGEX, after string interpolation, should be a valid PCRE regex;
       * FILTER is one of `test`, `match`, or `capture`, as described below.