diff --git a/Cargo.lock b/Cargo.lock
index 9e36c90..d475b0c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -30,7 +30,7 @@ dependencies = [
  "lazy_static",
  "log",
  "md-5",
- "predicates",
+ "predicates 1.0.8",
  "regex",
  "rstest",
  "rusty-hook",
@@ -120,13 +120,13 @@ dependencies = [
 
 [[package]]
 name = "assert_cmd"
-version = "1.0.4"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f57fec1ac7e4de72dcc69811795f1a7172ed06012f80a5d1ee651b62484f588"
+checksum = "c98233c6673d8601ab23e77eb38f999c51100d46c5703b17288c57fddf3a1ffe"
 dependencies = [
  "bstr",
  "doc-comment",
- "predicates",
+ "predicates 2.1.1",
  "predicates-core",
  "predicates-tree",
  "wait-timeout",
@@ -309,6 +309,12 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
 
+[[package]]
+name = "difflib"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6184e33543162437515c2e2b48714794e37845ec9851711914eec9d308f6ebe8"
+
 [[package]]
 name = "digest"
 version = "0.9.0"
@@ -324,6 +330,12 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
+[[package]]
+name = "either"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
+
 [[package]]
 name = "encoding_rs"
 version = "0.8.28"
@@ -708,6 +720,15 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "47be2f14c678be2fdcab04ab1171db51b2762ce6f0a8ee87c8dd4a04ed216135"
 
+[[package]]
+name = "itertools"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9a9d19fa1e79b6215ff29b9d6880b706147f16e9b1dbb1e4e5947b5b02bc5e3"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "0.4.7"
@@ -1155,6 +1176,17 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "predicates"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5aab5be6e4732b473071984b3164dbbfb7a3674d30ea5ff44410b6bcd960c3c"
+dependencies = [
+ "difflib",
+ "itertools",
+ "predicates-core",
+]
+
 [[package]]
 name = "predicates-core"
 version = "1.0.2"
diff --git a/aer/Cargo.toml b/aer/Cargo.toml
index 4f94a5a..a975cf5 100644
--- a/aer/Cargo.toml
+++ b/aer/Cargo.toml
@@ -29,7 +29,7 @@ structopt = { version = "0.3.21", features = ["wrap_help"] }
 yansi = "0.5.0"
 
 [dev-dependencies]
-assert_cmd = "1.0.4"
+assert_cmd = "1.0.8"
 predicates = "1.0.8"
 rstest = "0.10.0"
 rusty-hook = "0.11.2"