diff --git a/README.md b/README.md
index 1246d94..da8dffc 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@
  - pyscard
  - pyserial
  - pytlv
- - cmd2 >= 1.3.0 but < 2.0.0
+ - cmd2 >= 1.5.0
  - jsonpath-ng
  - construct >= 2.9.51
  - bidict
diff --git a/requirements.txt b/requirements.txt
index bfdbd62..fb94472 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 pyscard
 pyserial
 pytlv
-cmd2==1.5
+cmd2>=1.5
 jsonpath-ng
 construct>=2.9.51
 bidict
diff --git a/setup.py b/setup.py
index 132dfe2..17edad9 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
         "pyscard",
         "serial",
         "pytlv",
-        "cmd2 >= 1.3.0, < 2.0.0",
+        "cmd2 >= 1.5.0",
         "jsonpath-ng",
         "construct >= 2.9.51",
         "bidict",