Update required versions of Python and Tensorflow

Change-Id: I4fcd22bd32870244eeb1784d2f26cc43b02b48a9
diff --git a/README.md b/README.md
index 5840bfb..d6c6da8 100644
--- a/README.md
+++ b/README.md
@@ -24,10 +24,10 @@
 ## Building
 
 Building core platform requires a recent version of CMake, a C/C++ cross compiler
-for Arm Cortex-M and Python 3.7+. There are sample toolchain files provided for
+for Arm Cortex-M and Python 3.9+. There are sample toolchain files provided for
 Arm Clang and Arm GCC.
 
-To run the helper scripts Python 3.7+ is required, together with the packages listed in
+To run the helper scripts Python 3.9+ is required, together with the packages listed in
 `requirements.txt`.
 
 ```
diff --git a/requirements.txt b/requirements.txt
index 421df41..e691cf8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 ethos-u-vela
 pillow
 pyelftools
-tensorflow==2.10
+tensorflow==2.11