diff --git a/backend/Cargo.lock b/backend/Cargo.lock
index 1c827f1..fc28c14 100644
--- a/backend/Cargo.lock
+++ b/backend/Cargo.lock
@@ -1093,7 +1093,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "pretty_env_logger"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "chrono 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1917,7 +1917,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime_guess 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "pretty_env_logger 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pretty_env_logger 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.98 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.98 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2040,7 +2040,7 @@ dependencies = [
 "checksum percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 "checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
 "checksum ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e3cbf9f658cdb5000fcf6f362b8ea2ba154b9f146a61c7a20d647034c6b6561b"
-"checksum pretty_env_logger 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "df8b3f4e0475def7d9c2e5de8e5a1306949849761e107b360d03e98eafaffd61"
+"checksum pretty_env_logger 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "717ee476b1690853d222af4634056d830b5197ffd747726a9a1eee6da9f49074"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
diff --git a/backend/Cargo.toml b/backend/Cargo.toml
index 0d28c1b..ba58356 100644
--- a/backend/Cargo.toml
+++ b/backend/Cargo.toml
@@ -15,7 +15,7 @@ lazy_static = "1.3.0"
 log = "0.4.8"
 mime_guess = "2.0.1"
 openssl-probe = "0.1.2"
-pretty_env_logger = "0.3.0"
+pretty_env_logger = "0.3.1"
 serde = { version = "1.0.98", features = ["rc"] }
 serde_derive = "1.0.98"
 serde_json = "1.0.40"