diff --git a/README.md b/README.md
index 8b93be46..a526c32c 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ To build and run HDTV, the following dependencies are required:
 
 * Python
 	- Tested with 3.8, 3.9, 3.10, and 3.11
-	- Packages: numpy scipy matplotlib prompt_toolkit>=3.0.37 uncertainties
+	- Packages: numpy scipy matplotlib prompt_toolkit>=3.0.40 uncertainties
     - Packages for development & testing: docutils pytest pytest-cov
 * [Cern ROOT](https://root.cern/) 6
     - Tested with version 6.26 and higher
diff --git a/setup.py b/setup.py
index dc6b4051..2d660700 100755
--- a/setup.py
+++ b/setup.py
@@ -64,7 +64,7 @@
         "matplotlib",
         "numpy",
         "ipython",
-        "prompt_toolkit>=3.0.37",
+        "prompt_toolkit>=3.0.40",
         "traitlets",
         "uncertainties",
     ],