diff --git a/README.md b/README.md
index 37510786..a45934cb 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Please install the following dependencies:
  - pyscard
  - serial
  - pytlv
- - cmd2
+ - cmd2 >= 1.3.0 but < 2.0.0
  - jsonpath-ng
  - construct
  - bidict
diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index 27f02451..91dcdd20 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -19,7 +19,7 @@ virtualenv -p python3 venv --system-site-packages
 . venv/bin/activate
 pip install pytlv
 pip install pyyaml
-pip install cmd2
+pip install cmd2==1.5
 pip install jsonpath-ng
 pip install construct
 pip install bidict
diff --git a/requirements.txt b/requirements.txt
index 10e96679..f547abfb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 pyscard
 serial
 pytlv
-cmd2
+cmd2==1.5
 jsonpath-ng
 construct
 bidict
diff --git a/setup.py b/setup.py
index 2ef498ff..e8e4173e 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@ setup(
         "pyscard",
         "serial",
         "pytlv",
-        "cmd2 >= 1.3.0",
+        "cmd2 >= 1.3.0, < 2.0.0",
         "jsonpath-ng",
         "construct >= 2.9",
         "bidict",