diff --git a/Cargo.lock b/Cargo.lock
index f9d14a1..2df1868 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -135,6 +135,12 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "clap"
 version = "2.33.1"
@@ -158,11 +164,11 @@ checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 
 [[package]]
 name = "cpp_demangle"
-version = "0.2.16"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13c924384107361ca729c7d46b9134151b9a955ce99a773784f2777498e8552d"
+checksum = "6656dbc7c586cf2965887c3d066d9b983b20400bc2d52ed4cc5e33d0ceb2c602"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "glob",
 ]
 
@@ -173,7 +179,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
 dependencies = [
  "autocfg",
- "cfg-if",
+ "cfg-if 0.1.10",
  "lazy_static",
 ]
 
@@ -183,7 +189,7 @@ version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "dirs-sys",
 ]
 
@@ -193,7 +199,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "afa0b23de8fd801745c471deffa6e12d248f962c9fd4b4c33787b055599bde7b"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "redox_users",
  "winapi",
@@ -211,7 +217,7 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "wasi",
 ]
@@ -286,7 +292,7 @@ version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
 ]
 
 [[package]]
diff --git a/cargo-asm/Cargo.toml b/cargo-asm/Cargo.toml
index 9dd5cf4..945daf6 100644
--- a/cargo-asm/Cargo.toml
+++ b/cargo-asm/Cargo.toml
@@ -16,6 +16,6 @@ shellexpand = "2.0"
 cargo_metadata = "0.10"
 once_cell = "1.4.0"
 pdb = "0.6"
-cpp_demangle = "0.2"
+cpp_demangle = "0.3"
 termcolor = "1.1"
 atty = "0.2"