diff --git a/Cargo.lock b/Cargo.lock
index e9c11e6..479a2a1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,17 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "ahash"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
+dependencies = [
+ "getrandom 0.2.3",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.18"
@@ -108,12 +119,6 @@ dependencies = [
  "rustc-demangle",
 ]
 
-[[package]]
-name = "base64"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b41b7ea54a0c9d92199de89e20e58d49f02f8e699814ef3fdf266f6f748d15c7"
-
 [[package]]
 name = "base64"
 version = "0.12.3"
@@ -132,6 +137,18 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
+[[package]]
+name = "bitvec"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
+dependencies = [
+ "funty",
+ "radium",
+ "tap",
+ "wyz",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.7.3"
@@ -164,19 +181,23 @@ dependencies = [
 
 [[package]]
 name = "bson"
-version = "1.2.2"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38b6553abdb9d2d8f262f0b5bccf807321d5b7d1a12796bcede8e1f150e85f2e"
+checksum = "6cc3e671fc2a91c8e84396cf14a8ed5a4c929739446aa6a33763b7e7d1568bf4"
 dependencies = [
+ "ahash",
  "base64 0.13.0",
- "chrono",
+ "bitvec",
  "hex",
+ "indexmap",
+ "js-sys",
  "lazy_static",
- "linked-hash-map",
- "rand 0.7.3",
+ "rand 0.8.4",
  "serde",
+ "serde_bytes",
  "serde_json",
- "uuid",
+ "time 0.3.20",
+ "uuid 1.3.0",
 ]
 
 [[package]]
@@ -323,7 +344,7 @@ dependencies = [
  "num-integer",
  "num-traits",
  "serde",
- "time",
+ "time 0.1.44",
  "winapi",
 ]
 
@@ -377,6 +398,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d997bd5e24a5928dd43e46dc529867e207907fe0b239c3477d924f7f2ca320"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crates-index"
 version = "0.16.7"
@@ -467,11 +497,11 @@ dependencies = [
 
 [[package]]
 name = "crypto-mac"
-version = "0.7.0"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4434400df11d95d556bac068ddfedd482915eb18fe8bea89bc80b6e4b1c179e5"
+checksum = "bff07008ec701e8028e2ceb8f83f0e4274ee62bd2dbdc4fefff2e9a91824081a"
 dependencies = [
- "generic-array 0.12.4",
+ "generic-array 0.14.4",
  "subtle",
 ]
 
@@ -689,20 +719,6 @@ dependencies = [
  "termcolor",
 ]
 
-[[package]]
-name = "err-derive"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22deed3a8124cff5fa835713fa105621e43bbdc46690c3a6b68328a012d350d4"
-dependencies = [
- "proc-macro-error",
- "proc-macro2",
- "quote",
- "rustversion",
- "syn",
- "synstructure",
-]
-
 [[package]]
 name = "fake-simd"
 version = "0.1.2"
@@ -782,6 +798,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
 
+[[package]]
+name = "funty"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6d5a32815ae3f33302d95fdcb2ce17862f8c65363dcfd29360480ba1001fc9c"
+
 [[package]]
 name = "futures"
 version = "0.3.15"
@@ -1084,7 +1106,7 @@ dependencies = [
  "http",
  "mime",
  "sha-1 0.9.6",
- "time",
+ "time 0.1.44",
 ]
 
 [[package]]
@@ -1125,12 +1147,12 @@ dependencies = [
 
 [[package]]
 name = "hmac"
-version = "0.7.1"
+version = "0.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5dcb5e64cda4c23119ab41ba960d1e170a774c8e4b9d9e6a9bc18aabf5e59695"
+checksum = "c1441c6b1e930e2817404b5046f1f989899143a12bf92de603b69f4e0aee1e15"
 dependencies = [
  "crypto-mac",
- "digest 0.8.1",
+ "digest 0.9.0",
 ]
 
 [[package]]
@@ -1161,7 +1183,7 @@ checksum = "527e8c9ac747e28542699a951517aa9a6945af506cd1f2e1b53a576c17b6cc11"
 dependencies = [
  "bytes",
  "fnv",
- "itoa",
+ "itoa 0.4.7",
 ]
 
 [[package]]
@@ -1224,7 +1246,7 @@ dependencies = [
  "http-body",
  "httparse",
  "httpdate",
- "itoa",
+ "itoa 0.4.7",
  "pin-project",
  "socket2 0.4.0",
  "tokio",
@@ -1392,6 +1414,12 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
+[[package]]
+name = "itoa"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "453ad9f582a441959e5f0d088b02ce04cfe8d51a8eaf077f12ac6d3e94164ca6"
+
 [[package]]
 name = "jobserver"
 version = "0.1.22"
@@ -1544,13 +1572,13 @@ checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
 
 [[package]]
 name = "md-5"
-version = "0.8.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a18af3dcaf2b0219366cdb4e2af65a6101457b415c3d1a5c71dd9c2b7c77b9c8"
+checksum = "7b5a279bb9607f9f53c22d496eade00d138d1bdcccd07d74650387cf94942a15"
 dependencies = [
- "block-buffer 0.7.3",
- "digest 0.8.1",
- "opaque-debug 0.2.3",
+ "block-buffer 0.9.0",
+ "digest 0.9.0",
+ "opaque-debug 0.3.0",
 ]
 
 [[package]]
@@ -1653,18 +1681,20 @@ dependencies = [
 
 [[package]]
 name = "mongodb"
-version = "2.0.0-alpha"
+version = "2.0.0-beta"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48b63adec24cd1347d765124a8d9b427207a69407fe28bf48d04d39e0ffcbe83"
+checksum = "e7bf6da4c15a6eea66750989ff2f3319d6ca9fdc8f903d4dc1c0ef72541af905"
 dependencies = [
  "async-trait",
- "base64 0.11.0",
+ "base64 0.13.0",
  "bitflags",
  "bson",
  "chrono",
  "derivative",
- "err-derive",
- "futures",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-util",
  "hex",
  "hmac",
  "lazy_static",
@@ -1672,29 +1702,29 @@ dependencies = [
  "os_info",
  "pbkdf2",
  "percent-encoding",
- "rand 0.7.3",
+ "rand 0.8.4",
  "reqwest",
  "rustls",
  "serde",
  "serde_bytes",
  "serde_with",
- "sha-1 0.8.2",
+ "sha-1 0.9.6",
  "sha2",
- "socket2 0.3.19",
+ "socket2 0.4.0",
  "stringprep",
  "strsim 0.10.0",
  "take_mut",
- "time",
+ "thiserror",
  "tokio",
  "tokio-rustls",
  "tokio-util",
  "trust-dns-proto",
  "trust-dns-resolver",
  "typed-builder",
- "uuid",
+ "uuid 0.8.2",
  "version_check",
  "webpki",
- "webpki-roots 0.18.0",
+ "webpki-roots",
 ]
 
 [[package]]
@@ -1772,7 +1802,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bafe4179722c2894288ee77a9f044f02811c86af699344c498b0840c698a2465"
 dependencies = [
  "arrayvec",
- "itoa",
+ "itoa 0.4.7",
 ]
 
 [[package]]
@@ -1937,11 +1967,10 @@ checksum = "877630b3de15c0b64cc52f659345724fbf6bdad9bd9566699fc53688f3c34a34"
 
 [[package]]
 name = "pbkdf2"
-version = "0.3.0"
+version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "006c038a43a45995a9670da19e67600114740e8511d4333bf97a56e66a7542d9"
+checksum = "bf916dd32dd26297907890d99dc2740e33f6bd9073965af4ccff2967962f5508"
 dependencies = [
- "byteorder",
  "crypto-mac",
 ]
 
@@ -2128,6 +2157,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "radium"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
+
 [[package]]
 name = "rand"
 version = "0.3.23"
@@ -2162,7 +2197,6 @@ dependencies = [
  "rand_chacha 0.2.2",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
- "rand_pcg",
 ]
 
 [[package]]
@@ -2248,15 +2282,6 @@ dependencies = [
  "rand_core 0.6.3",
 ]
 
-[[package]]
-name = "rand_pcg"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "16abd0c1b639e9eb4d7c50c0b8100b0d0f849be2349829c740fe8e6eb4816429"
-dependencies = [
- "rand_core 0.5.1",
-]
-
 [[package]]
 name = "rayon"
 version = "1.5.1"
@@ -2380,7 +2405,7 @@ dependencies = [
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
- "webpki-roots 0.21.1",
+ "webpki-roots",
  "winreg 0.7.0",
 ]
 
@@ -2419,7 +2444,7 @@ dependencies = [
  "libc",
  "rand 0.3.23",
  "rustc-serialize",
- "time",
+ "time 0.1.44",
 ]
 
 [[package]]
@@ -2622,7 +2647,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "799e97dc9fdae36a5c8b8f2cae9ce2ee9fdce2058c57a93e6099d919fd982f79"
 dependencies = [
  "indexmap",
- "itoa",
+ "itoa 0.4.7",
  "ryu",
  "serde",
 ]
@@ -2643,7 +2668,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edfa57a7f8d9c1d260a549e7224100f6c43d43f9103e06dd8b4095a9b2b43ce9"
 dependencies = [
  "form_urlencoded",
- "itoa",
+ "itoa 0.4.7",
  "ryu",
  "serde",
 ]
@@ -2713,21 +2738,22 @@ checksum = "8c4cfa741c5832d0ef7fab46cabed29c2aae926db0b11bb2069edd8db5e64e16"
 dependencies = [
  "block-buffer 0.9.0",
  "cfg-if 1.0.0",
- "cpufeatures",
+ "cpufeatures 0.1.5",
  "digest 0.9.0",
  "opaque-debug 0.3.0",
 ]
 
 [[package]]
 name = "sha2"
-version = "0.8.2"
+version = "0.9.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a256f46ea78a0c0d9ff00077504903ac881a1dafdc20da66545699e7776b3e69"
+checksum = "4d58a1e1bf39749807d89cf2d98ac2dfa0ff1cb3faa38fbb64dd88ac8013d800"
 dependencies = [
- "block-buffer 0.7.3",
- "digest 0.8.1",
- "fake-simd",
- "opaque-debug 0.2.3",
+ "block-buffer 0.9.0",
+ "cfg-if 1.0.0",
+ "cpufeatures 0.2.5",
+ "digest 0.9.0",
+ "opaque-debug 0.3.0",
 ]
 
 [[package]]
@@ -2899,9 +2925,9 @@ dependencies = [
 
 [[package]]
 name = "subtle"
-version = "1.0.0"
+version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
+checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "supercow"
@@ -2920,24 +2946,18 @@ dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "synstructure"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b834f2d66f734cb897113e34aaff2f1ab4719ca946f9a7358dba8f8064148701"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "unicode-xid",
-]
-
 [[package]]
 name = "take_mut"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f764005d11ee5f36500a149ace24e00e3da98b0158b3e2d53a7495660d3f4d60"
 
+[[package]]
+name = "tap"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
+
 [[package]]
 name = "tar"
 version = "0.4.35"
@@ -3063,6 +3083,33 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd0cbfecb4d19b5ea75bb31ad904eb5b9fa13f21079c3b92017ebdf4999a5890"
+dependencies = [
+ "itoa 1.0.6",
+ "serde",
+ "time-core",
+ "time-macros",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e153e1f1acaef8acc537e68b44906d2db6436e2b35ac2c6b42640fff91f00fd"
+
+[[package]]
+name = "time-macros"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd80a657e71da814b8e5d60d3374fc6d35045062245d80224748ae522dd76f36"
+dependencies = [
+ "time-core",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.2.0"
@@ -3379,9 +3426,9 @@ dependencies = [
 
 [[package]]
 name = "typed-builder"
-version = "0.4.1"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfc955f27acc7a547f328f52f4a5a568986a31efec2fc6de865279f3995787b9"
+checksum = "a46ee5bd706ff79131be9c94e7edcb82b703c487766a114434e5790361cf08c5"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3535,6 +3582,16 @@ dependencies = [
  "getrandom 0.2.3",
 ]
 
+[[package]]
+name = "uuid"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1674845326ee10d37ca60470760d4288a6f80f304007d92e5c53bab78c9cfd79"
+dependencies = [
+ "getrandom 0.2.3",
+ "serde",
+]
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -3717,15 +3774,6 @@ dependencies = [
  "untrusted",
 ]
 
-[[package]]
-name = "webpki-roots"
-version = "0.18.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91cd5736df7f12a964a5067a12c62fa38e1bd8080aff1f80bc29be7c80d19ab4"
-dependencies = [
- "webpki",
-]
-
 [[package]]
 name = "webpki-roots"
 version = "0.21.1"
@@ -3790,6 +3838,15 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "wyz"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
+dependencies = [
+ "tap",
+]
+
 [[package]]
 name = "xattr"
 version = "0.2.2"
diff --git a/web-backend/metrics/Cargo.toml b/web-backend/metrics/Cargo.toml
index b638a07..3995f85 100644
--- a/web-backend/metrics/Cargo.toml
+++ b/web-backend/metrics/Cargo.toml
@@ -20,7 +20,7 @@ chrono = "0.4" # used for datetime of mongodb document
 rust-crypto = "0.2" # used to hash the repo url (to derive a folder dir)
 
 # driver
-mongodb = "=2.0.0-alpha" # database used to store result of analyses (note: alpha supports latest tokio)
+mongodb = "=2.0.0-beta" # database used to store result of analyses (note: alpha supports latest tokio)
 
 # app-specific
 guppy = { version = "0.9.0", features = ["summaries"] } # library to analyze deps