diff --git a/.circleci/config.yml b/.circleci/config.yml
index 369c792123..11f43349ab 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -37,8 +37,7 @@ commands:
           name: Core Rust Checks
           command: |
             cargo fmt -- --check
-            # https://github.com/bodil/sized-chunks/issues/11
-            cargo audit --ignore RUSTSEC-2020-0041
+            cargo audit
   python-check:
     steps:
       - run:
diff --git a/Cargo.lock b/Cargo.lock
index a025309f97..181558e701 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -14,8 +14,8 @@ dependencies = [
  "futures-sink",
  "log",
  "pin-project 0.4.28",
- "tokio",
- "tokio-util",
+ "tokio 0.2.25",
+ "tokio-util 0.3.1",
 ]
 
 [[package]]
@@ -77,7 +77,7 @@ dependencies = [
  "futures-core",
  "futures-util",
  "fxhash",
- "h2",
+ "h2 0.2.7",
  "http",
  "httparse",
  "indexmap",
@@ -133,7 +133,7 @@ dependencies = [
  "futures-channel",
  "futures-util",
  "smallvec",
- "tokio",
+ "tokio 0.2.25",
 ]
 
 [[package]]
@@ -149,7 +149,7 @@ dependencies = [
  "futures-channel",
  "futures-util",
  "log",
- "mio",
+ "mio 0.6.23",
  "mio-uds",
  "num_cpus",
  "slab",
@@ -423,7 +423,7 @@ checksum = "374bba43fc924d90393ee7768e6f75d223a98307a488fe5bc34b66c3e96932a6"
 dependencies = [
  "async-trait",
  "futures 0.3.16",
- "tokio",
+ "tokio 0.2.25",
 ]
 
 [[package]]
@@ -451,15 +451,6 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
-[[package]]
-name = "bitmaps"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "031043d04099746d8db04daf1fa424b2bc8bd69d92b25962dcde24da39ab64a2"
-dependencies = [
- "typenum",
-]
-
 [[package]]
 name = "block-buffer"
 version = "0.9.0"
@@ -783,7 +774,7 @@ dependencies = [
  "crossbeam-queue",
  "num_cpus",
  "serde 1.0.126",
- "tokio",
+ "tokio 0.2.25",
 ]
 
 [[package]]
@@ -950,28 +941,6 @@ dependencies = [
  "serde 1.0.126",
 ]
 
-[[package]]
-name = "failure"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d32e9bd16cc02eae7db7ef620b392808b89f6a5e16bb3497d159c6b92a0f4f86"
-dependencies = [
- "backtrace",
- "failure_derive",
-]
-
-[[package]]
-name = "failure_derive"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa4da3c766cd7a0db8242e326e9e4e081edd567072893ed320008189715366a4"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "synstructure",
-]
-
 [[package]]
 name = "flate2"
 version = "1.0.20"
@@ -1238,12 +1207,31 @@ dependencies = [
  "http",
  "indexmap",
  "slab",
- "tokio",
- "tokio-util",
+ "tokio 0.2.25",
+ "tokio-util 0.3.1",
  "tracing",
  "tracing-futures",
 ]
 
+[[package]]
+name = "h2"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "825343c4eef0b63f541f8903f395dc5beb362a979b5799a84062527ef1e37726"
+dependencies = [
+ "bytes 1.0.1",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "http",
+ "indexmap",
+ "slab",
+ "tokio 1.9.0",
+ "tokio-util 0.6.7",
+ "tracing",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
@@ -1333,12 +1321,13 @@ dependencies = [
 
 [[package]]
 name = "http-body"
-version = "0.3.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13d5ff830006f7646652e057693569bfe0d51760c0085a071769d142a205111b"
+checksum = "60daa14be0e0786db0f03a9e57cb404c9d756eed2b6c62b9ea98ec5743ec75a9"
 dependencies = [
- "bytes 0.5.6",
+ "bytes 1.0.1",
  "http",
+ "pin-project-lite 0.2.7",
 ]
 
 [[package]]
@@ -1349,9 +1338,9 @@ checksum = "f3a87b616e37e93c22fb19bcd386f02f3af5ea98a25670ad0fce773de23c5e68"
 
 [[package]]
 name = "httpdate"
-version = "0.3.2"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "494b4d60369511e7dea41cf646832512a94e542f68bb9c49e54518e0f468eb47"
+checksum = "6456b8a6c8f33fee7d958fcd1b60d55b11940a79e63ae87013e6d22e26034440"
 
 [[package]]
 name = "humantime"
@@ -1361,23 +1350,23 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "hyper"
-version = "0.13.10"
+version = "0.14.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a6f157065790a3ed2f88679250419b5cdd96e714a0d65f7797fd337186e96bb"
+checksum = "0b61cf2d1aebcf6e6352c97b81dc2244ca29194be1b276f5d8ad5c6330fffb11"
 dependencies = [
- "bytes 0.5.6",
+ "bytes 1.0.1",
  "futures-channel",
  "futures-core",
  "futures-util",
- "h2",
+ "h2 0.3.3",
  "http",
  "http-body",
  "httparse",
  "httpdate",
  "itoa",
- "pin-project 1.0.8",
- "socket2 0.3.19",
- "tokio",
+ "pin-project-lite 0.2.7",
+ "socket2 0.4.1",
+ "tokio 1.9.0",
  "tower-service",
  "tracing",
  "want",
@@ -1385,15 +1374,15 @@ dependencies = [
 
 [[package]]
 name = "hyper-tls"
-version = "0.4.3"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d979acc56dcb5b8dddba3917601745e877576475aa046df3226eabdecef78eed"
+checksum = "d6183ddfa99b85da61a140bea0efc93fdf56ceaa041b37d553518030827f9905"
 dependencies = [
- "bytes 0.5.6",
+ "bytes 1.0.1",
  "hyper",
  "native-tls",
- "tokio",
- "tokio-tls",
+ "tokio 1.9.0",
+ "tokio-native-tls",
 ]
 
 [[package]]
@@ -1424,20 +1413,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1f7280c75fb2e2fc47080ec80ccc481376923acb04501957fc38f935c3de5088"
 
-[[package]]
-name = "im"
-version = "14.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "696059c87b83c5a258817ecd67c3af915e3ed141891fc35a1e79908801cf0ce7"
-dependencies = [
- "bitmaps",
- "rand_core 0.5.1",
- "rand_xoshiro",
- "sized-chunks",
- "typenum",
- "version_check",
-]
-
 [[package]]
 name = "indexmap"
 version = "1.7.0"
@@ -1675,16 +1650,6 @@ version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
-[[package]]
-name = "mime_guess"
-version = "2.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2684d4c2e97d99848d30b324b00c8fcc7e5c897b7cbb5819b09e7c90e8baf212"
-dependencies = [
- "mime",
- "unicase",
-]
-
 [[package]]
 name = "miniz_oxide"
 version = "0.4.4"
@@ -1708,12 +1673,25 @@ dependencies = [
  "kernel32-sys",
  "libc",
  "log",
- "miow",
+ "miow 0.2.2",
  "net2",
  "slab",
  "winapi 0.2.8",
 ]
 
+[[package]]
+name = "mio"
+version = "0.7.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c2bdb6314ec10835cd3293dd268473a835c02b7b352e788be788b3c6ca6bb16"
+dependencies = [
+ "libc",
+ "log",
+ "miow 0.3.7",
+ "ntapi",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "mio-uds"
 version = "0.6.8"
@@ -1722,7 +1700,7 @@ checksum = "afcb699eb26d4332647cc848492bbc15eafb26f08d0304550d5aa1f612e066f0"
 dependencies = [
  "iovec",
  "libc",
- "mio",
+ "mio 0.6.23",
 ]
 
 [[package]]
@@ -1737,6 +1715,15 @@ dependencies = [
  "ws2_32-sys",
 ]
 
+[[package]]
+name = "miow"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
+dependencies = [
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "mysqlclient-sys"
 version = "0.2.4"
@@ -1787,6 +1774,15 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "ntapi"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f6bb902e437b6d86e03cce10a7e2af662292c5dfef23b65899ea3ac9354ad44"
+dependencies = [
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -2226,15 +2222,6 @@ dependencies = [
  "rand_core 0.6.3",
 ]
 
-[[package]]
-name = "rand_xoshiro"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9fcdd2e881d02f1d9390ae47ad8e5696a9e4be7b547a1da2afbc61973217004"
-dependencies = [
- "rand_core 0.5.1",
-]
-
 [[package]]
 name = "redox_syscall"
 version = "0.2.9"
@@ -2282,12 +2269,12 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.10.10"
+version = "0.11.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0718f81a8e14c4dbb3b34cf23dc6aaf9ab8a0dfec160c534b3dbca1aaa21f47c"
+checksum = "246e9f61b9bb77df069a947682be06e31ac43ea37862e244a69f177694ea6d22"
 dependencies = [
  "base64 0.13.0",
- "bytes 0.5.6",
+ "bytes 1.0.1",
  "encoding_rs",
  "futures-core",
  "futures-util",
@@ -2300,15 +2287,14 @@ dependencies = [
  "lazy_static",
  "log",
  "mime",
- "mime_guess",
  "native-tls",
  "percent-encoding 2.1.0",
  "pin-project-lite 0.2.7",
  "serde 1.0.126",
  "serde_json",
  "serde_urlencoded",
- "tokio",
- "tokio-tls",
+ "tokio 1.9.0",
+ "tokio-native-tls",
  "url 2.2.2",
  "wasm-bindgen",
  "wasm-bindgen-futures",
@@ -2377,6 +2363,15 @@ dependencies = [
  "semver 0.11.0",
 ]
 
+[[package]]
+name = "rustc_version"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
+dependencies = [
+ "semver 1.0.4",
+]
+
 [[package]]
 name = "rustversion"
 version = "1.0.5"
@@ -2464,6 +2459,12 @@ dependencies = [
  "semver-parser 0.10.2",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "568a8e6258aa33c13358f81fd834adb854c6f7c9468520910a9b1e8fac068012"
+
 [[package]]
 name = "semver-parser"
 version = "0.7.0"
@@ -2481,9 +2482,9 @@ dependencies = [
 
 [[package]]
 name = "sentry"
-version = "0.19.1"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ebd0927ec4a785fc4328abe9089afbe074b3874983b3373fc328a73a9f8310cb"
+checksum = "546b9b6f76c26c60ffbcf0b7136e15169fe13d43949b4aadb7c1edc1c3f3a26f"
 dependencies = [
  "curl",
  "httpdate",
@@ -2491,16 +2492,16 @@ dependencies = [
  "sentry-backtrace",
  "sentry-contexts",
  "sentry-core",
- "sentry-failure",
  "sentry-panic",
  "serde_json",
+ "tokio 1.9.0",
 ]
 
 [[package]]
 name = "sentry-backtrace"
-version = "0.19.1"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4585422b92435a04569441aef8dc3417eb9d7547fd591b67fdf6fdfe204232c9"
+checksum = "9cd0cba2aff36ac98708f7a6e7abbdde82dbaf180d5870c41084dc1b473648b9"
 dependencies = [
  "backtrace",
  "lazy_static",
@@ -2510,47 +2511,38 @@ dependencies = [
 
 [[package]]
 name = "sentry-contexts"
-version = "0.19.1"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d607b3be0593e026f1c089f0086c244429fe3026eca8e075e8f9e834703ee4c0"
+checksum = "9bacf1c62427c6c97b896640d0c4dd204bbd3b79dd192d7cb40891aa5ee11d58"
 dependencies = [
  "hostname",
  "lazy_static",
  "libc",
  "regex",
- "rustc_version 0.2.3",
+ "rustc_version 0.4.0",
  "sentry-core",
  "uname",
 ]
 
 [[package]]
 name = "sentry-core"
-version = "0.19.1"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9c118347dc0958e66f8b0f3866f0d85bbf8a63bffe64603baebe3f989e929e6"
+checksum = "f9a957270c9a430218f8031c866493061a27e35a70250e9527f093563a33ce6b"
 dependencies = [
- "im",
+ "chrono",
  "lazy_static",
- "rand 0.7.3",
+ "rand 0.8.4",
  "sentry-types",
-]
-
-[[package]]
-name = "sentry-failure"
-version = "0.19.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8599d375040329e106653a133a1d876af53df8b504cff1de7b6f4471fd41eec3"
-dependencies = [
- "failure",
- "sentry-backtrace",
- "sentry-core",
+ "serde 1.0.126",
+ "serde_json",
 ]
 
 [[package]]
 name = "sentry-panic"
-version = "0.19.1"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3943c3fc7fff39244158b625bb2235a27e7e4d0b862b5e52cb57db51e6a6e6e"
+checksum = "692bf989f0c99f025e33d7f58e62822c3771f56d189698c66dcc863122255d95"
 dependencies = [
  "sentry-backtrace",
  "sentry-core",
@@ -2558,9 +2550,9 @@ dependencies = [
 
 [[package]]
 name = "sentry-types"
-version = "0.19.1"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87b41bac48a3586249431fa9efb88cd1414c3455117eb57c02f5bda9634e158d"
+checksum = "f4dd2266fee014a86e250e98e389191ecd23be546b5c42b6a2fb9af2972fadac"
 dependencies = [
  "chrono",
  "debugid",
@@ -2679,16 +2671,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "sized-chunks"
-version = "0.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d59044ea371ad781ff976f7b06480b9f0180e834eda94114f2afb4afc12b7718"
-dependencies = [
- "bitmaps",
- "typenum",
-]
-
 [[package]]
 name = "slab"
 version = "0.4.3"
@@ -2953,7 +2935,7 @@ dependencies = [
  "slog-term",
  "thiserror",
  "time 0.3.0",
- "tokio",
+ "tokio 0.2.25",
  "url 2.2.2",
  "urlencoding",
  "uuid",
@@ -2962,18 +2944,6 @@ dependencies = [
  "woothee",
 ]
 
-[[package]]
-name = "synstructure"
-version = "0.12.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "474aaa926faa1603c40b7885a9eaea29b444d1cb2850cb7c0e37bb1a4182f4fa"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "unicode-xid",
-]
-
 [[package]]
 name = "take_mut"
 version = "0.2.2"
@@ -3137,9 +3107,8 @@ dependencies = [
  "lazy_static",
  "libc",
  "memchr",
- "mio",
+ "mio 0.6.23",
  "mio-uds",
- "num_cpus",
  "pin-project-lite 0.1.12",
  "signal-hook-registry",
  "slab",
@@ -3147,6 +3116,22 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "tokio"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b7b349f11a7047e6d1276853e612d152f5e8a352c61917887cc2169e2366b4c"
+dependencies = [
+ "autocfg",
+ "bytes 1.0.1",
+ "libc",
+ "memchr",
+ "mio 0.7.13",
+ "num_cpus",
+ "pin-project-lite 0.2.7",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "tokio-macros"
 version = "0.2.6"
@@ -3159,13 +3144,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "tokio-tls"
-version = "0.3.1"
+name = "tokio-native-tls"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a70f4fcd7b3b24fb194f837560168208f669ca8cb70d0c4b862944452396343"
+checksum = "f7d995660bd2b7f8c1568414c1126076c13fbb725c40112dc0120b78eb9b717b"
 dependencies = [
  "native-tls",
- "tokio",
+ "tokio 1.9.0",
 ]
 
 [[package]]
@@ -3179,7 +3164,21 @@ dependencies = [
  "futures-sink",
  "log",
  "pin-project-lite 0.1.12",
- "tokio",
+ "tokio 0.2.25",
+]
+
+[[package]]
+name = "tokio-util"
+version = "0.6.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1caa0b0c8d94a049db56b5acf8cba99dc0623aab1b26d5b5f5e2d945846b3592"
+dependencies = [
+ "bytes 1.0.1",
+ "futures-core",
+ "futures-sink",
+ "log",
+ "pin-project-lite 0.2.7",
+ "tokio 1.9.0",
 ]
 
 [[package]]
@@ -3244,7 +3243,7 @@ dependencies = [
  "rand 0.7.3",
  "smallvec",
  "thiserror",
- "tokio",
+ "tokio 0.2.25",
  "url 2.2.2",
 ]
 
@@ -3263,7 +3262,7 @@ dependencies = [
  "resolv-conf",
  "smallvec",
  "thiserror",
- "tokio",
+ "tokio 0.2.25",
  "trust-dns-proto",
 ]
 
@@ -3294,15 +3293,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "unicase"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
-dependencies = [
- "version_check",
-]
-
 [[package]]
 name = "unicode-bidi"
 version = "0.3.5"
diff --git a/Cargo.toml b/Cargo.toml
index 90bbb303ce..a0e99bca17 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -57,9 +57,8 @@ num_cpus = "1"
 protobuf = "2.20.0"
 rand = "0.8"
 regex = "1.4"
-# pin to 0.19: https://github.com/getsentry/sentry-rust/issues/277
-sentry = { version = "0.19", features = ["with_curl_transport"] }# pin to 0.19 due to curl transport, failure
-sentry-backtrace = "0.19"
+sentry = { version="0.23.0", features = ["curl"]}
+sentry-backtrace = "0.23.0"
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = { version = "1.0", features = ["arbitrary_precision"] }
diff --git a/src/main.rs b/src/main.rs
index 3b848aa5cd..41c2b30355 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -35,8 +35,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     // Avoid its default reqwest transport for now due to issues w/
     // likely grpcio's boringssl
     let curl_transport_factory = |options: &sentry::ClientOptions| {
-        Arc::new(sentry::transports::CurlHttpTransport::new(options))
-            as Arc<dyn sentry::internals::Transport>
+        Arc::new(sentry::transports::CurlHttpTransport::new(options)) as Arc<dyn sentry::Transport>
     };
     let _sentry = sentry::init(sentry::ClientOptions {
         // Note: set "debug: true," to diagnose sentry issues