diff --git a/Cargo.lock b/Cargo.lock
index a9b9ddae..5fc9fc89 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -131,6 +131,7 @@ dependencies = [
  "log",
  "reqwest",
  "serde",
+ "serde_derive",
  "simplelog",
  "structopt",
  "strum",
@@ -138,7 +139,7 @@ dependencies = [
  "tar",
  "tempdir",
  "tinytemplate",
- "tokio",
+ "tokio 0.3.5",
 ]
 
 [[package]]
@@ -256,7 +257,7 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
- "tokio",
+ "tokio 0.2.24",
  "url",
 ]
 
@@ -530,7 +531,7 @@ dependencies = [
  "http",
  "indexmap",
  "slab",
- "tokio",
+ "tokio 0.2.24",
  "tokio-util",
  "tracing",
  "tracing-futures",
@@ -611,7 +612,7 @@ dependencies = [
  "itoa",
  "pin-project 1.0.2",
  "socket2",
- "tokio",
+ "tokio 0.2.24",
  "tower-service",
  "tracing",
  "want",
@@ -626,7 +627,7 @@ dependencies = [
  "bytes",
  "hyper",
  "native-tls",
- "tokio",
+ "tokio 0.2.24",
  "tokio-tls",
 ]
 
@@ -1194,7 +1195,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded",
- "tokio",
+ "tokio 0.2.24",
  "tokio-tls",
  "url",
  "wasm-bindgen",
@@ -1530,14 +1531,24 @@ dependencies = [
  "num_cpus",
  "pin-project-lite 0.1.11",
  "slab",
+]
+
+[[package]]
+name = "tokio"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a12a3eb39ee2c231be64487f1fcbe726c8f2514876a55480a5ab8559fc374252"
+dependencies = [
+ "autocfg",
+ "pin-project-lite 0.2.0",
  "tokio-macros",
 ]
 
 [[package]]
 name = "tokio-macros"
-version = "0.2.6"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e44da00bfc73a25f814cd8d7e57a68a5c31b74b3152a0a1d1f590c97ed06265a"
+checksum = "21d30fdbb5dc2d8f91049691aa1a9d4d4ae422a21c334ce8936e5886d30c5c45"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1551,7 +1562,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a70f4fcd7b3b24fb194f837560168208f669ca8cb70d0c4b862944452396343"
 dependencies = [
  "native-tls",
- "tokio",
+ "tokio 0.2.24",
 ]
 
 [[package]]
@@ -1565,7 +1576,7 @@ dependencies = [
  "futures-sink",
  "log",
  "pin-project-lite 0.1.11",
- "tokio",
+ "tokio 0.2.24",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 6c1f27db..bf287add 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@ license = "GPL-3.0"
 crates_io_api = "0.6.1"
 cargo_metadata = "0.12.1"
 tinytemplate = "1.1.0"
-tokio = { version = "0.2.24", features = [ "macros" ] }
+tokio = { version = "0.3.5", features = [ "macros" ] }
 log = "0.4.11"
 structopt = "0.3.21"
 simplelog = "0.8.0"