diff --git a/archivebox/config.py b/archivebox/config.py
index 6cfee837..e06fc9a6 100644
--- a/archivebox/config.py
+++ b/archivebox/config.py
@@ -378,7 +378,7 @@ DYNAMIC_CONFIG_SCHEMA: ConfigDefaultDict = {
     'READABILITY_VERSION':      {'default': lambda c: bin_version(c['READABILITY_BINARY']) if c['USE_READABILITY'] else None},
 
     'USE_MERCURY':              {'default': lambda c: c['USE_MERCURY'] and c['SAVE_MERCURY']},
-    'MERCURY_VERSION':          {'default': lambda c: '1.0.0' if shutil.which(str(bin_path(c['MERCURY_BINARY']))) else None},  # mercury is unversioned
+    'MERCURY_VERSION':          {'default': lambda c: (bin_version(c['MERCURY_BINARY']) or '1.0.0') if shutil.which(str(bin_path(c['MERCURY_BINARY']))) else None},  # mercury is unversioned
 
     'USE_GIT':                  {'default': lambda c: c['USE_GIT'] and c['SAVE_GIT']},
     'GIT_VERSION':              {'default': lambda c: bin_version(c['GIT_BINARY']) if c['USE_GIT'] else None},
diff --git a/package-lock.json b/package-lock.json
index fed13aaf..eab7b512 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,11 +5,11 @@
   "requires": true,
   "dependencies": {
     "@babel/runtime-corejs2": {
-      "version": "7.16.5",
-      "resolved": "https://registry.npmjs.org/@babel/runtime-corejs2/-/runtime-corejs2-7.16.5.tgz",
-      "integrity": "sha512-GHejyoK+JQqna9rUTkybaGahZOOM+EDcUsbWaLye1g4ZOQMotrMiY8VTBbX1gycZTMNG/YiWTo4WTABvyPUgOg==",
+      "version": "7.17.11",
+      "resolved": "https://registry.npmjs.org/@babel/runtime-corejs2/-/runtime-corejs2-7.17.11.tgz",
+      "integrity": "sha512-pJe8Aerb88TGVi1Xe/AE36aRCPrg+h6ktZPGl6xaJvOfTLcMMuogQu3BYcxeXPTNHhSYbmsDVYBs8CfAxeFFTg==",
       "requires": {
-        "core-js": "^2.6.5",
+        "core-js": "^2.6.12",
         "regenerator-runtime": "^0.13.4"
       }
     },
@@ -28,9 +28,8 @@
       }
     },
     "@postlight/mercury-parser": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/@postlight/mercury-parser/-/mercury-parser-2.2.1.tgz",
-      "integrity": "sha512-WsXHcVfbwlAb0HO1nZ3tS2ipNvLeLk9frJj3y5hn/NAeQfEJeRm9AtMrxpOJ11X8L4he+bRyjr1bpIPvQPWvCA==",
+      "version": "git+https://github.com/postlight/mercury-parser.git#9cd9662bcbfea00b773fad691a4f6e53394ff543",
+      "from": "git+https://github.com/postlight/mercury-parser.git",
       "requires": {
         "@babel/runtime-corejs2": "^7.2.0",
         "@postlight/ci-failed-test-reporter": "^1.0",
@@ -50,20 +49,7 @@
         "url": "^0.11.0",
         "valid-url": "^1.0.9",
         "wuzzy": "^0.1.4",
-        "yargs-parser": "^14.0.0"
-      },
-      "dependencies": {
-        "http-headers": {
-          "version": "3.0.2",
-          "resolved": false,
-          "requires": {
-            "next-line": "^1.1.0"
-          }
-        },
-        "next-line": {
-          "version": "1.1.0",
-          "resolved": false
-        }
+        "yargs-parser": "^15.0.1"
       }
     },
     "@postman/form-data": {
@@ -1234,9 +1220,9 @@
       "integrity": "sha512-2qHaIQr2VLRFoxe2nASzsV6ef4yOOH+Fi9FBOVH6cqeSgUnoyySPZkxzLuzd+RYOQTRpROA0ztTMqxROKSb/nA=="
     },
     "postman-request": {
-      "version": "2.88.1-postman.30",
-      "resolved": "https://registry.npmjs.org/postman-request/-/postman-request-2.88.1-postman.30.tgz",
-      "integrity": "sha512-zsGvs8OgNeno1Q44zTgGP2IL7kCqUy4DAtl8/ms0AQpqkIoysrxzR/Zg4kM1Kz8/duBvwxt8NN717wB7SMNm6w==",
+      "version": "2.88.1-postman.31",
+      "resolved": "https://registry.npmjs.org/postman-request/-/postman-request-2.88.1-postman.31.tgz",
+      "integrity": "sha512-OJbYqP7ItxQ84yHyuNpDywCZB0HYbpHJisMQ9lb1cSL3N5H3Td6a2+3l/a74UMd3u82BiGC5yQyYmdOIETP/nQ==",
       "requires": {
         "@postman/form-data": "~3.1.1",
         "@postman/tunnel-agent": "^0.6.3",
@@ -1342,9 +1328,9 @@
       }
     },
     "qs": {
-      "version": "6.5.2",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
-      "integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA=="
+      "version": "6.5.3",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.3.tgz",
+      "integrity": "sha512-qxXIEh4pCGfHICj1mAJQ2/2XVZkjCDTcEgfoSQxc/fYivUZxTkk7L3bDBJSoNrEzXI17oUO5Dp07ktqE5KzczA=="
     },
     "querystring": {
       "version": "0.2.0",
@@ -1920,9 +1906,9 @@
       "optional": true
     },
     "sshpk": {
-      "version": "1.16.1",
-      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.16.1.tgz",
-      "integrity": "sha512-HXXqVUq7+pcKeLqqZj6mHFUMvXtOJt1uoUx09pFW6011inTMxqI8BA8PM95myrIyyKwdnzjdFjLiE6KBPVtJIg==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.17.0.tgz",
+      "integrity": "sha512-/9HIEs1ZXGhSPE8X6Ccm7Nam1z8KcoCqPdI7ecm1N33EzAetWahvQWVqLZtaZQ+IDKX4IyA2o0gBzqIMkAagHQ==",
       "requires": {
         "asn1": "~0.2.3",
         "assert-plus": "^1.0.0",
@@ -2269,9 +2255,9 @@
       }
     },
     "yargs-parser": {
-      "version": "14.0.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-14.0.0.tgz",
-      "integrity": "sha512-zn/Mnx+tbFjkCFUodEpjXckNS65NfpB5oyqOkDDEG/8uxlfLZJu2IoBLQFjukUkn9rBbGkVYNzrDh6qy4NUd3g==",
+      "version": "15.0.3",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-15.0.3.tgz",
+      "integrity": "sha512-/MVEVjTXy/cGAjdtQf8dW3V9b97bPN7rNn8ETj6BmAQL7ibC7O1Q9SPJbGjgh3SlwoBNXMzj/ZGIj8mBgl12YA==",
       "requires": {
         "camelcase": "^5.0.0",
         "decamelize": "^1.2.0"
diff --git a/package.json b/package.json
index 194713e9..405a2ed1 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "repository": "github:ArchiveBox/ArchiveBox",
   "license": "MIT",
   "dependencies": {
-    "@postlight/mercury-parser": "^2.2.1",
+    "@postlight/mercury-parser": "git+https://github.com/postlight/mercury-parser.git",
     "readability-extractor": "git+https://github.com/ArchiveBox/readability-extractor.git",
     "single-file": "git+https://github.com/gildas-lormeau/SingleFile.git"
   }