diff --git a/src/tor/src/rust/Cargo.lock b/src/tor/src/rust/Cargo.lock
index e2f24b0af..8d7aaf566 100644
--- a/src/tor/src/rust/Cargo.lock
+++ b/src/tor/src/rust/Cargo.lock
@@ -1,122 +1,146 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "crypto"
 version = "0.0.1"
 dependencies = [
- "digest 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "external 0.0.1",
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.5.0-pre.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.2.0-pre.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "smartlist 0.0.1",
- "tor_allocate 0.0.1",
- "tor_log 0.1.0",
+ "digest",
+ "external",
+ "libc",
+ "rand",
+ "rand_core 0.6.3",
+ "smartlist",
+ "tor_allocate",
+ "tor_log",
 ]
 
 [[package]]
 name = "digest"
 version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00a49051fef47a72c9623101b19bd71924a45cca838826caae3eaa4d00772603"
 dependencies = [
- "generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "generic-array",
 ]
 
 [[package]]
 name = "external"
 version = "0.0.1"
 dependencies = [
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "smartlist 0.0.1",
- "tor_allocate 0.0.1",
+ "libc",
+ "smartlist",
+ "tor_allocate",
 ]
 
 [[package]]
 name = "generic-array"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef25c5683767570c2bbd7deba372926a55eaae9982d7726ee2a1050239d45b9d"
 dependencies = [
- "typenum 1.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "typenum",
 ]
 
 [[package]]
 name = "libc"
 version = "0.2.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f54263ad99207254cf58b5f701ecb432c717445ea2ee8af387334bdd1a03fdff"
 
 [[package]]
 name = "protover"
 version = "0.0.1"
 dependencies = [
- "external 0.0.1",
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "smartlist 0.0.1",
- "tor_allocate 0.0.1",
- "tor_log 0.1.0",
- "tor_util 0.0.1",
+ "external",
+ "libc",
+ "smartlist",
+ "tor_allocate",
+ "tor_log",
+ "tor_util",
 ]
 
 [[package]]
 name = "rand"
 version = "0.5.0-pre.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3795e4701d9628a63a84d0289e66279883b40df165fca7caed7b87122447032a"
+dependencies = [
+ "rand_core 0.2.2",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1961a422c4d189dfb50ffa9320bf1f2a9bd54ecb92792fb9477f99a1045f3372"
+dependencies = [
+ "rand_core 0.3.1",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
 dependencies = [
- "rand_core 0.2.0-pre.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.4.2",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.2.0-pre.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"
+
+[[package]]
+name = "rand_core"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
 
 [[package]]
 name = "smartlist"
 version = "0.0.1"
 dependencies = [
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
 ]
 
 [[package]]
 name = "tor_allocate"
 version = "0.0.1"
 dependencies = [
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc",
 ]
 
 [[package]]
 name = "tor_log"
 version = "0.1.0"
 dependencies = [
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "tor_allocate 0.0.1",
+ "libc",
+ "tor_allocate",
 ]
 
 [[package]]
 name = "tor_rust"
 version = "0.1.0"
 dependencies = [
- "protover 0.0.1",
- "tor_util 0.0.1",
+ "protover",
+ "tor_util",
 ]
 
 [[package]]
 name = "tor_util"
 version = "0.0.1"
 dependencies = [
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "tor_allocate 0.0.1",
- "tor_log 0.1.0",
+ "libc",
+ "tor_allocate",
+ "tor_log",
 ]
 
 [[package]]
 name = "typenum"
 version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[metadata]
-"checksum digest 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "00a49051fef47a72c9623101b19bd71924a45cca838826caae3eaa4d00772603"
-"checksum generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ef25c5683767570c2bbd7deba372926a55eaae9982d7726ee2a1050239d45b9d"
-"checksum libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)" = "f54263ad99207254cf58b5f701ecb432c717445ea2ee8af387334bdd1a03fdff"
-"checksum rand 0.5.0-pre.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3795e4701d9628a63a84d0289e66279883b40df165fca7caed7b87122447032a"
-"checksum rand_core 0.2.0-pre.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c7255ffbdb188d5be1a69b6f9f3cf187de4207430b9e79ed5b76458a6b20de9a"
-"checksum typenum 1.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "13a99dc6780ef33c78780b826cf9d2a78840b72cae9474de4bcaf9051e60ebbd"
+checksum = "13a99dc6780ef33c78780b826cf9d2a78840b72cae9474de4bcaf9051e60ebbd"
diff --git a/src/tor/src/rust/crypto/Cargo.toml b/src/tor/src/rust/crypto/Cargo.toml
index a7ff7f78d..55341fac6 100644
--- a/src/tor/src/rust/crypto/Cargo.toml
+++ b/src/tor/src/rust/crypto/Cargo.toml
@@ -13,7 +13,7 @@ path = "lib.rs"
 [dependencies]
 libc = "=0.2.39"
 digest = "=0.7.2"
-rand_core = { version = "=0.2.0-pre.0", default-features = false }
+rand_core = { version = "=0.6.3", default-features = false }
 
 external = { path = "../external" }
 smartlist = { path = "../smartlist" }
@@ -22,7 +22,7 @@ tor_log = { path = "../tor_log" }
 
 [dev-dependencies]
 rand = { version = "=0.5.0-pre.2", default-features = false }
-rand_core = { version = "=0.2.0-pre.0", default-features = false }
+rand_core = { version = "=0.6.3", default-features = false }
 
 [features]
 # If this feature is enabled, test code which calls Tor C code from Rust will