diff --git a/Cargo.lock b/Cargo.lock
index c2fc3d0f2b..7c00ea8f7d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -422,6 +422,12 @@ version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "130aac562c0dd69c56b3b1cc8ffd2e17be31d0b6c25b61c96b76231aa23e39e1"
 
+[[package]]
+name = "bytes"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
+
 [[package]]
 name = "cargo-emit"
 version = "0.1.1"
@@ -630,7 +636,7 @@ dependencies = [
  "clap",
  "criterion-plot",
  "csv",
- "itertools",
+ "itertools 0.9.0",
  "lazy_static",
  "num-traits",
  "oorandom",
@@ -651,7 +657,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ddeaf7989f00f2e1d871a26a110f3ed713632feac17f65f03ca938c542618b60"
 dependencies = [
  "cast",
- "itertools",
+ "itertools 0.9.0",
 ]
 
 [[package]]
@@ -1817,6 +1823,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9a9d19fa1e79b6215ff29b9d6880b706147f16e9b1dbb1e4e5947b5b02bc5e3"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "0.4.5"
@@ -2036,7 +2051,7 @@ dependencies = [
  "mc-util-serial",
  "mc-util-test-helper",
  "mc-util-test-vectors",
- "prost",
+ "prost 0.6.1",
  "rand 0.7.3",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
@@ -2099,7 +2114,7 @@ dependencies = [
  "mc-util-repr-bytes",
  "mc-util-serial",
  "mc-util-test-helper",
- "prost",
+ "prost 0.6.1",
  "protobuf",
  "rand 0.7.3",
 ]
@@ -2122,7 +2137,7 @@ dependencies = [
  "mc-util-build-sgx",
  "mc-util-encodings",
  "mc-util-from-random",
- "prost",
+ "prost 0.6.1",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
  "serde",
@@ -2173,7 +2188,7 @@ dependencies = [
  "mc-util-encodings",
  "mc-util-serial",
  "pem",
- "prost",
+ "prost 0.6.1",
  "rand 0.7.3",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
@@ -2223,7 +2238,7 @@ dependencies = [
  "mc-common",
  "mc-sgx-compat",
  "mc-sgx-types",
- "prost",
+ "prost 0.6.1",
 ]
 
 [[package]]
@@ -2410,7 +2425,7 @@ dependencies = [
  "mc-util-build-script",
  "mc-util-from-random",
  "mc-util-serial",
- "prost",
+ "prost 0.6.1",
  "rand 0.7.3",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
@@ -2534,7 +2549,7 @@ dependencies = [
  "mc-util-serial",
  "mc-util-uri",
  "mockall",
- "prost",
+ "prost 0.6.1",
  "protobuf",
  "rand 0.7.3",
  "rand_core 0.5.1",
@@ -2659,7 +2674,7 @@ dependencies = [
  "mc-util-serial",
  "mc-util-test-helper",
  "pem",
- "prost",
+ "prost 0.6.1",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
  "semver",
@@ -2763,7 +2778,7 @@ dependencies = [
  "mc-util-metrics",
  "mc-util-serial",
  "mockall",
- "prost",
+ "prost 0.6.1",
  "rand 0.7.3",
  "rand_core 0.5.1",
  "serde",
@@ -2887,7 +2902,7 @@ dependencies = [
  "mc-watcher",
  "more-asserts",
  "num_cpus",
- "prost",
+ "prost 0.6.1",
  "protobuf",
  "rand 0.7.3",
  "rand_core 0.5.1",
@@ -3040,7 +3055,7 @@ dependencies = [
  "mc-sgx-core-types-sys",
  "mc-util-encodings",
  "mc-util-repr-bytes",
- "prost",
+ "prost 0.6.1",
  "serde",
  "subtle 2.2.3",
 ]
@@ -3110,7 +3125,7 @@ dependencies = [
  "mc-util-encodings",
  "mc-util-from-random",
  "mc-util-repr-bytes",
- "prost",
+ "prost 0.6.1",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
  "serde",
@@ -3147,7 +3162,7 @@ dependencies = [
  "mc-util-encodings",
  "mc-util-from-random",
  "mc-util-repr-bytes",
- "prost",
+ "prost 0.6.1",
  "prost-types",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
@@ -3200,7 +3215,7 @@ dependencies = [
  "cfg-if",
  "mc-common",
  "mc-sgx-build",
- "prost",
+ "prost 0.6.1",
 ]
 
 [[package]]
@@ -3224,7 +3239,7 @@ dependencies = [
  "mc-sgx-libc-types",
  "mc-sgx-slog",
  "mc-sgx-types",
- "prost",
+ "prost 0.6.1",
  "rustc-demangle",
 ]
 
@@ -3290,7 +3305,7 @@ dependencies = [
  "mc-util-test-helper",
  "merlin",
  "proptest",
- "prost",
+ "prost 0.6.1",
  "rand 0.7.3",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
@@ -3333,7 +3348,7 @@ dependencies = [
  "mc-util-from-random",
  "mc-util-serial",
  "mc-util-test-helper",
- "prost",
+ "prost 0.6.1",
  "rand 0.7.3",
  "rand_core 0.5.1",
  "serde",
@@ -3470,7 +3485,7 @@ dependencies = [
  "mc-util-serial",
  "mc-util-uri",
  "prometheus",
- "prost",
+ "prost 0.6.1",
  "protobuf",
  "rand 0.6.5",
 ]
@@ -3503,7 +3518,7 @@ dependencies = [
  "displaydoc",
  "lmdb-rkv",
  "mc-util-serial",
- "prost",
+ "prost 0.6.1",
 ]
 
 [[package]]
@@ -3550,7 +3565,7 @@ name = "mc-util-repr-bytes"
 version = "1.0.0"
 dependencies = [
  "generic-array 0.14.4",
- "prost",
+ "prost 0.6.1",
  "serde",
  "serde_cbor",
 ]
@@ -3559,7 +3574,7 @@ dependencies = [
 name = "mc-util-serial"
 version = "1.0.0"
 dependencies = [
- "prost",
+ "prost 0.6.1",
  "serde",
  "serde_cbor",
 ]
@@ -3568,7 +3583,7 @@ dependencies = [
 name = "mc-util-test-helper"
 version = "1.0.0"
 dependencies = [
- "itertools",
+ "itertools 0.9.0",
  "lazy_static",
  "mc-account-keys",
  "mc-common",
@@ -3645,7 +3660,7 @@ dependencies = [
  "mc-util-serial",
  "mc-util-test-helper",
  "mc-watcher-api",
- "prost",
+ "prost 0.6.1",
  "rand_core 0.5.1",
  "rand_hc 0.2.0",
  "structopt",
@@ -4270,7 +4285,17 @@ version = "0.6.1"
 source = "git+https://github.com/danburkert/prost?rev=6113789f70b69709820becba4242824b4fb3ffec#6113789f70b69709820becba4242824b4fb3ffec"
 dependencies = [
  "bytes 0.5.4",
- "prost-derive",
+ "prost-derive 0.6.1",
+]
+
+[[package]]
+name = "prost"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de5e2533f59d08fcf364fd374ebda0692a70bd6d7e66ef97f306f45c6c5d8020"
+dependencies = [
+ "bytes 1.1.0",
+ "prost-derive 0.8.0",
 ]
 
 [[package]]
@@ -4279,7 +4304,20 @@ version = "0.6.1"
 source = "git+https://github.com/danburkert/prost?rev=6113789f70b69709820becba4242824b4fb3ffec#6113789f70b69709820becba4242824b4fb3ffec"
 dependencies = [
  "anyhow",
- "itertools",
+ "itertools 0.9.0",
+ "proc-macro2 1.0.12",
+ "quote 1.0.4",
+ "syn 1.0.18",
+]
+
+[[package]]
+name = "prost-derive"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "600d2f334aa05acb02a755e217ef1ab6dea4d51b58b7846588b747edec04efba"
+dependencies = [
+ "anyhow",
+ "itertools 0.10.3",
  "proc-macro2 1.0.12",
  "quote 1.0.4",
  "syn 1.0.18",
@@ -4287,12 +4325,12 @@ dependencies = [
 
 [[package]]
 name = "prost-types"
-version = "0.6.1"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1834f67c0697c001304b75be76f67add9c89742eda3a085ad8ee0bb38c3417aa"
+checksum = "603bbd6394701d13f3f25aada59c7de9d35a6a5887cfc156181234a44002771b"
 dependencies = [
- "bytes 0.5.4",
- "prost",
+ "bytes 1.1.0",
+ "prost 0.8.0",
 ]
 
 [[package]]
diff --git a/sgx/ias-types/Cargo.toml b/sgx/ias-types/Cargo.toml
index cd7da4bcb8..6338a2fbc3 100644
--- a/sgx/ias-types/Cargo.toml
+++ b/sgx/ias-types/Cargo.toml
@@ -38,7 +38,7 @@ typenum = { version = "1.12", features = ["no_std"] }
 hex = { version = "0.4", default-features = false }
 hex_fmt = "0.3"
 prost = { version = "0.6.1", optional = true, default-features = false }
-prost-types = { version = "0.6.1", optional = true, default-features = false }
+prost-types = { version = "0.8.0", optional = true, default-features = false }
 rand_core = "0.5"
 rjson = "0.3"
 subtle = { version = "2.2", default-features = false, features = ["i128"] }