diff --git a/Cargo.lock b/Cargo.lock
index fdcaa4ebff2..1059b2ede53 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -533,7 +533,7 @@ checksum = "c8492de420e9e60bc9a1d66e2dbb91825390b738a388606600663fc529b4b307"
 dependencies = [
  "byteorder",
  "digest",
- "rand_core",
+ "rand_core 0.5.1",
  "subtle",
  "zeroize 1.2.0",
 ]
@@ -585,7 +585,7 @@ checksum = "c762bae6dcaf24c4c84667b8579785430908723d5c889f469d76a41d59cc7a9d"
 dependencies = [
  "curve25519-dalek",
  "ed25519",
- "rand",
+ "rand 0.7.3",
  "serde",
  "sha2",
  "zeroize 1.2.0",
@@ -802,6 +802,17 @@ dependencies = [
  "wasi 0.9.0+wasi-snapshot-preview1",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4060f4657be78b8e766215b02b18a2e862d83745545de804638e2b545e81aee6"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "wasi 0.10.0+wasi-snapshot-preview1",
+]
+
 [[package]]
 name = "ghash"
 version = "0.3.0"
@@ -1212,7 +1223,7 @@ dependencies = [
  "base64",
  "lazy_static",
  "oasis-core-runtime",
- "rand",
+ "rand 0.7.3",
  "rustc-hex",
  "serde",
  "serde_bytes",
@@ -1245,7 +1256,7 @@ dependencies = [
  "oasis-core-keymanager-api-common",
  "oasis-core-keymanager-client",
  "oasis-core-runtime",
- "rand",
+ "rand 0.7.3",
  "sgx-isa",
  "sp800-185",
  "tiny-keccak 2.0.2",
@@ -1279,7 +1290,7 @@ dependencies = [
  "num-traits",
  "pem",
  "percent-encoding",
- "rand",
+ "rand 0.7.3",
  "rustc-hex",
  "serde",
  "serde_bytes",
@@ -1401,7 +1412,7 @@ dependencies = [
  "cfg-if 0.1.10",
  "cloudabi",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.57",
  "rustc_version",
  "smallvec",
  "winapi 0.3.9",
@@ -1578,11 +1589,23 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
+ "libc",
+ "rand_chacha 0.2.2",
+ "rand_core 0.5.1",
+ "rand_hc 0.2.0",
+]
+
+[[package]]
+name = "rand"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c24fcd450d3fa2b592732565aa4f17a27a61c65ece4726353e000939b0edee34"
+dependencies = [
  "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
+ "rand_chacha 0.3.0",
+ "rand_core 0.6.1",
+ "rand_hc 0.3.0",
 ]
 
 [[package]]
@@ -1592,7 +1615,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.6.1",
 ]
 
 [[package]]
@@ -1601,7 +1634,16 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c026d7df8b298d90ccbbc5190bd04d85e159eaf5576caeacf8741da93ccbd2e5"
+dependencies = [
+ "getrandom 0.2.1",
 ]
 
 [[package]]
@@ -1610,7 +1652,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
 dependencies = [
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3190ef7066a446f2e7f42e239d161e905420ccab01eb967c9eb27d21b2322a73"
+dependencies = [
+ "rand_core 0.6.1",
 ]
 
 [[package]]
@@ -1619,6 +1670,15 @@ version = "0.1.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "41cc0f7e4d5d4544e8861606a285bb08d3e70712ccc7d2b84d7c0ccfaf4b05ce"
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05ec8ca9416c5ea37062b502703cd7fcb207736bc294f6e0cf367ac6fc234570"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "regex"
 version = "1.3.9"
@@ -1686,7 +1746,7 @@ checksum = "27b95bc9f4c062eac8d29d7852571015a34ba888d192536c19bb3759e6fc6e26"
 dependencies = [
  "backtrace",
  "crossbeam-channel 0.5.0",
- "rand",
+ "rand 0.7.3",
  "trackable",
 ]
 
@@ -1699,7 +1759,7 @@ dependencies = [
  "crossbeam-channel 0.5.0",
  "hostname",
  "percent-encoding",
- "rand",
+ "rand 0.7.3",
  "rustracing",
  "thrift_codec",
  "trackable",
@@ -1907,7 +1967,7 @@ dependencies = [
  "io-context",
  "oasis-core-client",
  "oasis-core-runtime",
- "rand",
+ "rand 0.7.3",
  "serde_bytes",
  "simple-keyvalue-api",
  "tokio 0.1.22",
@@ -1923,7 +1983,7 @@ dependencies = [
  "oasis-core-client",
  "oasis-core-keymanager-client",
  "oasis-core-runtime",
- "rand",
+ "rand 0.7.3",
  "simple-keyvalue-api",
  "tokio 0.1.22",
 ]
@@ -1937,7 +1997,7 @@ dependencies = [
  "io-context",
  "oasis-core-client",
  "oasis-core-runtime",
- "rand",
+ "rand 0.7.3",
  "simple-keyvalue-api",
  "tokio 0.1.22",
 ]
@@ -2006,8 +2066,8 @@ dependencies = [
  "aes-gcm",
  "blake2",
  "chacha20poly1305",
- "rand",
- "rand_core",
+ "rand 0.7.3",
+ "rand_core 0.5.1",
  "ring",
  "rustc_version",
  "sha2",
@@ -2023,7 +2083,7 @@ checksum = "03088793f677dce356f3ccc2edb1b314ad191ab702a5de3faf49304f7e104918"
 dependencies = [
  "cfg-if 0.1.10",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.57",
  "winapi 0.3.9",
 ]
 
@@ -2101,14 +2161,14 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.1.0"
+version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
+checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "libc",
- "rand",
- "redox_syscall",
+ "rand 0.8.1",
+ "redox_syscall 0.2.4",
  "remove_dir_all",
  "winapi 0.3.9",
 ]
@@ -2121,7 +2181,7 @@ dependencies = [
  "grpcio",
  "oasis-core-client",
  "oasis-core-runtime",
- "rand",
+ "rand 0.7.3",
  "simple-keyvalue-api",
  "tokio 0.1.22",
 ]
@@ -2659,7 +2719,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc614d95359fd7afc321b66d2107ede58b246b844cf5d8a0adcca413e439f088"
 dependencies = [
  "curve25519-dalek",
- "rand_core",
+ "rand_core 0.5.1",
  "zeroize 1.2.0",
 ]
 
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index 593b3fe20b9..0d389ba6ab3 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -53,7 +53,7 @@ bech32 = "0.7.2"
 [dev-dependencies]
 # For storage interoperability tests only.
 grpcio = "0.4.6"
-tempfile = "3.0.7"
+tempfile = "3.2.0"
 
 [[bin]]
 name = "fuzz-mkvs-proof"