diff --git a/tools/bookgen/Pipfile.lock b/tools/bookgen/Pipfile.lock
index 9ea05c0..1582338 100644
--- a/tools/bookgen/Pipfile.lock
+++ b/tools/bookgen/Pipfile.lock
@@ -26,33 +26,31 @@
         },
         "numpy": {
             "hashes": [
-                "sha256:032be656d89bbf786d743fee11d01ef318b0781281241997558fa7950028dd29",
-                "sha256:104f5e90b143dbf298361a99ac1af4cf59131218a045ebf4ee5990b83cff5fab",
-                "sha256:125a0e10ddd99a874fd357bfa1b636cd58deb78ba4a30b5ddb09f645c3512e04",
-                "sha256:12e4ba5c6420917571f1a5becc9338abbde71dd811ce40b37ba62dec7b39af6d",
-                "sha256:13adf545732bb23a796914fe5f891a12bd74cf3d2986eed7b7eba2941eea1590",
-                "sha256:2d7e27442599104ee08f4faed56bb87c55f8b10a5494ac2ead5c98a4b289e61f",
-                "sha256:3bc63486a870294683980d76ec1e3efc786295ae00128f9ea38e2c6e74d5a60a",
-                "sha256:3d3087e24e354c18fb35c454026af3ed8997cfd4997765266897c68d724e4845",
-                "sha256:4ed8e96dc146e12c1c5cdd6fb9fd0757f2ba66048bf94c5126b7efebd12d0090",
-                "sha256:60759ab15c94dd0e1ed88241fd4fa3312db4e91d2c8f5a2d4cf3863fad83d65b",
-                "sha256:65410c7f4398a0047eea5cca9b74009ea61178efd78d1be9847fac1d6716ec1e",
-                "sha256:66b467adfcf628f66ea4ac6430ded0614f5cc06ba530d09571ea404789064adc",
-                "sha256:7199109fa46277be503393be9250b983f325880766f847885607d9b13848f257",
-                "sha256:72251e43ac426ff98ea802a931922c79b8d7596480300eb9f1b1e45e0543571e",
-                "sha256:89e5336f2bec0c726ac7e7cdae181b325a9c0ee24e604704ed830d241c5e47ff",
-                "sha256:89f937b13b8dd17b0099c7c2e22066883c86ca1575a975f754babc8fbf8d69a9",
-                "sha256:9c94cab5054bad82a70b2e77741271790304651d584e2cdfe2041488e753863b",
-                "sha256:9eb551d122fadca7774b97db8a112b77231dcccda8e91a5bc99e79890797175e",
-                "sha256:a1d7995d1023335e67fb070b2fae6f5968f5be3802b15ad6d79d81ecaa014fe0",
-                "sha256:ae61f02b84a0211abb56462a3b6cd1e7ec39d466d3160eb4e1da8bf6717cdbeb",
-                "sha256:b9410c0b6fed4a22554f072a86c361e417f0258838957b78bd063bde2c7f841f",
-                "sha256:c26287dfc888cf1e65181f39ea75e11f42ffc4f4529e5bd19add57ad458996e2",
-                "sha256:c91ec9569facd4757ade0888371eced2ecf49e7982ce5634cc2cf4e7331a4b14",
-                "sha256:ecb5b74c702358cdc21268ff4c37f7466357871f53a30e6f84c686952bef16a9"
+                "sha256:0cfe07133fd00b27edee5e6385e333e9eeb010607e8a46e1cd673f05f8596595",
+                "sha256:11a1f3816ea82eed4178102c56281782690ab5993251fdfd75039aad4d20385f",
+                "sha256:2762331de395739c91f1abb88041f94a080cb1143aeec791b3b223976228af3f",
+                "sha256:283d9de87c0133ef98f93dfc09fad3fb382f2a15580de75c02b5bb36a5a159a5",
+                "sha256:3d22662b4b10112c545c91a0741f2436f8ca979ab3d69d03d19322aa970f9695",
+                "sha256:41388e32e40b41dd56eb37fcaa7488b2b47b0adf77c66154d6b89622c110dfe9",
+                "sha256:42c16cec1c8cf2728f1d539bd55aaa9d6bb48a7de2f41eb944697293ef65a559",
+                "sha256:47ee7a839f5885bc0c63a74aabb91f6f40d7d7b639253768c4199b37aede7982",
+                "sha256:5a311ee4d983c487a0ab546708edbdd759393a3dc9cd30305170149fedd23c88",
+                "sha256:5dc65644f75a4c2970f21394ad8bea1a844104f0fe01f278631be1c7eae27226",
+                "sha256:6ed0d073a9c54ac40c41a9c2d53fcc3d4d4ed607670b9e7b0de1ba13b4cbfe6f",
+                "sha256:76ba7c40e80f9dc815c5e896330700fd6e20814e69da9c1267d65a4d051080f1",
+                "sha256:818b9be7900e8dc23e013a92779135623476f44a0de58b40c32a15368c01d471",
+                "sha256:a024181d7aef0004d76fb3bce2a4c9f2e67a609a9e2a6ff2571d30e9976aa383",
+                "sha256:a955e4128ac36797aaffd49ab44ec74a71c11d6938df83b1285492d277db5397",
+                "sha256:a97a954a8c2f046d3817c2bce16e3c7e9a9c2afffaf0400f5c16df5172a67c9c",
+                "sha256:a97e82c39d9856fe7d4f9b86d8a1e66eff99cf3a8b7ba48202f659703d27c46f",
+                "sha256:b55b953a1bdb465f4dc181758570d321db4ac23005f90ffd2b434cc6609a63dd",
+                "sha256:bb02929b0d6bfab4c48a79bd805bd7419114606947ec8284476167415171f55b",
+                "sha256:bece0a4a49e60e472a6d1f70ac6cdea00f9ab80ff01132f96bd970cdd8a9e5a9",
+                "sha256:e41e8951749c4b5c9a2dc5fdbc1a4eec6ab2a140fdae9b460b0f557eed870f4d",
+                "sha256:f71d57cc8645f14816ae249407d309be250ad8de93ef61d9709b45a0ddf4050c"
             ],
             "index": "pypi",
-            "version": "==1.20.1"
+            "version": "==1.22.0"
         }
     },
     "develop": {}