diff --git a/Cargo.lock b/Cargo.lock
index ff98cce..bd69815 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -323,16 +323,6 @@ dependencies = [
  "subtle",
 ]
 
-[[package]]
-name = "ctor"
-version = "0.1.22"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f877be4f7c9f246b183111634f75baa039715e3f46ce860677d3b19a69fb229c"
-dependencies = [
- "quote",
- "syn",
-]
-
 [[package]]
 name = "digest"
 version = "0.9.0"
@@ -827,11 +817,10 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.17"
+version = "0.4.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
 dependencies = [
- "cfg-if 1.0.0",
  "value-bag",
 ]
 
@@ -1590,13 +1579,9 @@ dependencies = [
 
 [[package]]
 name = "value-bag"
-version = "1.0.0-alpha.9"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2209b78d1249f7e6f3293657c9779fe31ced465df091bbd433a1cf88e916ec55"
-dependencies = [
- "ctor",
- "version_check",
-]
+checksum = "d92ccd67fb88503048c01b59152a04effd0782d035a83a6d256ce6085f08f4a3"
 
 [[package]]
 name = "version_check"
diff --git a/Cargo.toml b/Cargo.toml
index d4dd14b..2f065dc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ bitflags = "1.2"
 cfg-if = "0.1"
 env_logger = "0.7.1"
 getrandom = { version = "0.2", features = ["js"] }
-log = "0.4.17" # pinned version for dependency of `async-std`
+log = "0.4.20" # pinned version for dependency of `async-std`
 libsecp256k1 = "0.5"
 multihash = "0.13"
 regex = { version = "1.5.5" }