diff --git a/README.md b/README.md
index f8b3dfa4f..e27486a84 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ or
 	$ git submodule update --init --recursive
 
 A C++ compiler with C++20 support is required as well as some standard tools
-such as GNU Flex, GNU Bison (>=3.8), CMake (>=3.27), Make (or other CMake
+such as GNU Flex, GNU Bison (>=3.8), CMake (>=3.28), Make (or other CMake
 generator such as Ninja), and Python (>=3.11). Some additional tools: readline,
 libffi, Tcl and zlib; will be used if available but are optional. Graphviz and
 Xdot are used by the `show` command to display schematics.
diff --git a/docs/source/getting_started/installation.rst b/docs/source/getting_started/installation.rst
index 691731fbf..cbbe5aa31 100644
--- a/docs/source/getting_started/installation.rst
+++ b/docs/source/getting_started/installation.rst
@@ -88,7 +88,7 @@ Build prerequisites
 ^^^^^^^^^^^^^^^^^^^
 
 A C++ compiler with C++20 support is required as well as some standard tools
-such as GNU Flex, GNU Bison (>=3.8), CMake (>=3.27), Make (or other CMake
+such as GNU Flex, GNU Bison (>=3.8), CMake (>=3.28), Make (or other CMake
 generator such as Ninja), and Python (>=3.11). Some additional tools: readline,
 libffi, Tcl and zlib; will be used if available but are optional. Graphviz and
 Xdot are used by the `show` command to display schematics.