diff --git a/Cargo.lock b/Cargo.lock
index cb82bb5..2d7058b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -180,7 +180,7 @@ dependencies = [
  "lazy_static",
  "log",
  "num_cpus",
- "parking_lot",
+ "parking_lot 0.10.0",
  "threadpool",
 ]
 
@@ -524,6 +524,15 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "cloudabi"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4344512281c643ae7638bbabc3af17a11307803ec8f0fcad9fae512a8bf36467"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "copyless"
 version = "0.1.4"
@@ -965,6 +974,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "instant"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b141fdc7836c525d4d594027d318c84161ca17aaf8113ab1f81ab93ae897485"
+
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -1056,9 +1071,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.66"
+version = "0.2.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558"
+checksum = "bd7d4bd64732af4bf3a67f367c27df8520ad7e230c5817b8ff485864d80242b9"
 
 [[package]]
 name = "libgit2-sys"
@@ -1115,6 +1130,15 @@ dependencies = [
  "scopeguard",
 ]
 
+[[package]]
+name = "lock_api"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28247cc5a5be2f05fbcd76dd0cf2c7d3b5400cb978a28042abcd4fa0b3f8261c"
+dependencies = [
+ "scopeguard",
+]
+
 [[package]]
 name = "log"
 version = "0.4.11"
@@ -1133,9 +1157,9 @@ checksum = "a94d21414c1f4a51209ad204c1776a3d0765002c76c6abcb602a6f09f1e881c7"
 
 [[package]]
 name = "log4rs"
-version = "0.12.0"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4d8e6e1d5f89acca713132acc6034f30bad09b961d1338161bdb71c08f6e4fa"
+checksum = "e1e1ad45e4584824d760c35d71868dd7e6e5acd8f5195a9573743b369fc86cd6"
 dependencies = [
  "arc-swap",
  "chrono",
@@ -1145,7 +1169,7 @@ dependencies = [
  "libc",
  "log",
  "log-mdc",
- "parking_lot",
+ "parking_lot 0.11.0",
  "serde",
  "serde-value",
  "serde_derive",
@@ -1404,8 +1428,19 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92e98c49ab0b7ce5b222f2cc9193fc4efe11c6d0bd4f648e374684a6857b1cfc"
 dependencies = [
- "lock_api",
- "parking_lot_core",
+ "lock_api 0.3.3",
+ "parking_lot_core 0.7.0",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4893845fa2ca272e647da5d0e46660a314ead9c2fdd9a883aabc32e481a8733"
+dependencies = [
+ "instant",
+ "lock_api 0.4.1",
+ "parking_lot_core 0.8.0",
 ]
 
 [[package]]
@@ -1415,7 +1450,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7582838484df45743c8434fbff785e8edf260c28748353d44bc0da32e0ceabf1"
 dependencies = [
  "cfg-if",
- "cloudabi",
+ "cloudabi 0.0.3",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "winapi 0.3.8",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c361aa727dd08437f2f1447be8b59a33b0edd15e0fcee698f935613d9efbca9b"
+dependencies = [
+ "cfg-if",
+ "cloudabi 0.1.0",
+ "instant",
  "libc",
  "redox_syscall",
  "smallvec",
@@ -1713,9 +1763,9 @@ dependencies = [
 
 [[package]]
 name = "scopeguard"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
+checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 
 [[package]]
 name = "security-framework"
@@ -1842,9 +1892,9 @@ checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 
 [[package]]
 name = "smallvec"
-version = "1.2.0"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c2fb2ec9bcd216a5b0d0ccf31ab17b5ed1d627960edff65bbe95d3ce221cefc"
+checksum = "3757cb9d89161a2f24e1cf78efa0c1fcff485d18e3f55e0aa3480824ddaa0f3f"
 
 [[package]]
 name = "socket2"
diff --git a/Cargo.toml b/Cargo.toml
index 1e4b53f..bf00b22 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ futures = "0.3.5"
 git2 = "0.13.5"
 lazy_static = "1.4.0"
 log = "0.4.11"
-log4rs = "0.12.0"
+log4rs = "0.13.0"
 number_prefix = "0.4.0"
 openssl-probe = "0.1.2"
 reqwest = "0.10.6"