diff --git a/package-lock.json b/package-lock.json
index 1f9113c..19999df 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1118,9 +1118,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.4",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.4.tgz",
-      "integrity": "sha1-eCA6TRwyiuHYbcpkYONptX9AVa4="
+      "version": "4.17.17",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.17.tgz",
+      "integrity": "sha512-/B2DjOphAoqi5BX4Gg2oh4UR0Gy/A7xYAMh3aSECEKzwS3eCDEpS0Cals1Ktvxwlal3bBJNc+5W9kNIcADdw5Q=="
     },
     "lodash._baseget": {
       "version": "3.7.2",
@@ -1467,28 +1467,6 @@
         }
       }
     },
-    "metalsmith-markdown-taxonomy": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/metalsmith-markdown-taxonomy/-/metalsmith-markdown-taxonomy-0.0.2.tgz",
-      "integrity": "sha512-N+zbq76trOqwO4lhqo18FlUN9DhzDv1vGN6Tj/mOmWTkT3/4MM+Q0pil/SPrUIySDSJpSctc/hom8eLTNJcSeQ==",
-      "requires": {
-        "async": "^2.4.1",
-        "debug": "^2.2.0",
-        "lodash": "^4.17.4",
-        "marked": "^0.3.6",
-        "minimatch": "^3.0.0"
-      },
-      "dependencies": {
-        "async": {
-          "version": "2.6.0",
-          "resolved": "https://registry.npmjs.org/async/-/async-2.6.0.tgz",
-          "integrity": "sha512-xAfGg1/NTLBBKlHFmnd7PlmUW9KhVQIUuSrYem9xzFUZy13ScvtyGGejaae9iAVRiRq9+Cx7DPFaAAhCpyxyPw==",
-          "requires": {
-            "lodash": "^4.14.0"
-          }
-        }
-      }
-    },
     "metalsmith-matters": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/metalsmith-matters/-/metalsmith-matters-1.2.0.tgz",
@@ -1505,18 +1483,6 @@
       "resolved": "https://registry.npmjs.org/metalsmith-metacopy/-/metalsmith-metacopy-0.2.0.tgz",
       "integrity": "sha1-Cl9sK0NNnMgmoUWn8BX3tmT0pfM="
     },
-    "metalsmith-migrate-safetag": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/metalsmith-migrate-safetag/-/metalsmith-migrate-safetag-0.2.0.tgz",
-      "integrity": "sha512-/qGKFehHya7amnFlXDB6R2xoBRbGJIYN0+1pStfb2fUgvxnUteH1gqwFnfF9i9uclF3yOtaUHNEMxWKcA6Q3fA==",
-      "requires": {
-        "debug": "^2.2.0",
-        "lodash": "^4.17.4",
-        "minimatch": "^3.0.0",
-        "source-map-support": "^0.4.15",
-        "trim-newlines": "^2.0.0"
-      }
-    },
     "metalsmith-packages": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/metalsmith-packages/-/metalsmith-packages-0.1.0.tgz",
@@ -1545,7 +1511,7 @@
         "async": "^2.0.0-rc.2",
         "debug": "^2.1.0",
         "multimatch": "^2.1.0",
-        "pdc": "github:cherbst/node-pdc#720ad811afd5239c27b3bbe9b4cd8677b0cde1df",
+        "pdc": "pdc@github:cherbst/node-pdc#720ad811afd5239c27b3bbe9b4cd8677b0cde1df",
         "system-install": "^1.0.0",
         "which": "^1.0.8"
       },
@@ -1668,7 +1634,7 @@
       "requires": {
         "async": "^2.4.1",
         "debug": "^2.2.0",
-        "hercule": "github:contentascode/hercule#2df09afb83b52c5cf8edc241a85d40a7ef0a546f",
+        "hercule": "hercule@github:contentascode/hercule#2df09afb83b52c5cf8edc241a85d40a7ef0a546f",
         "json-pointer": "^0.6.0",
         "multimatch": "^2.1.0",
         "pegjs": "^0.10.0"
@@ -3135,11 +3101,6 @@
       "resolved": "https://registry.npmjs.org/trim/-/trim-0.0.1.tgz",
       "integrity": "sha1-WFhUf2spB1fulczMZm+1AITEYN0="
     },
-    "trim-newlines": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-2.0.0.tgz",
-      "integrity": "sha1-tAPQuRvlDDMd/EuC7s6yLD3hbSA="
-    },
     "trim-trailing-lines": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/trim-trailing-lines/-/trim-trailing-lines-1.1.0.tgz",
diff --git a/package.json b/package.json
index de39a9c..37242f1 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "filter.js": "github:perfectwebteam/filter.js",
     "handlebars": "^4.0.10",
-    "lodash": "^4.17.4",
+    "lodash": "^4.17.17",
     "metalsmith-assets-copy": "0.0.2",
     "metalsmith-assets-improved": "github:contentascode/metalsmith-assets-improved#release",
     "metalsmith-contentascode-next": "^0.0.1",