From 0260dbcebfde6d4f9687d926135f1590000e6538 Mon Sep 17 00:00:00 2001
From: Martin Bubel <martin.bubel@itwm.fraunhofer.de>
Date: Thu, 16 Nov 2023 22:03:03 +0100
Subject: [PATCH 1/4] limit minimum python version #1038

---
 CHANGELOG.md | 2 ++
 setup.py     | 1 +
 2 files changed, 3 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index bebfe2eb..0728e22b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+* limit supported python versions to `">=3.9"` in accordance with numpy
+
 * Change from `nosetest` to `pytest`
 
 ## v1.9.8 (2019-05-17)
diff --git a/setup.py b/setup.py
index 135764d5..8415d2aa 100644
--- a/setup.py
+++ b/setup.py
@@ -158,6 +158,7 @@ setup(
     description=("The Gaussian Process Toolbox"),
     long_description=desc,
     license="BSD 3-clause",
+    python_requires=">=3.9",
     keywords="machine-learning gaussian-processes kernels",
     url="https://sheffieldml.github.io/GPy/",
     download_url="https://github.com/SheffieldML/GPy/archive/refs/heads/devel.zip",

From e962a12624fce64c7ffa1fec2e8962ea6e9a63bd Mon Sep 17 00:00:00 2001
From: Martin Bubel <martin.bubel@itwm.fraunhofer.de>
Date: Thu, 16 Nov 2023 22:04:49 +0100
Subject: [PATCH 2/4] Remove Python 3.6, 3.7, and 3.8 from Travis CI build

---
 .travis.yml | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 2de5e89a..044436c1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,9 +16,6 @@ addons:
 #  - "$HOME/install/"
 
 env:
-  - PYTHON_VERSION=3.6
-  - PYTHON_VERSION=3.7
-  - PYTHON_VERSION=3.8
   - PYTHON_VERSION=3.9
   - PYTHON_VERSION=3.10
   - PYTHON_VERSION=3.11

From 5030933a45f1544a4997e28972dc667d275bfc2d Mon Sep 17 00:00:00 2001
From: Martin Bubel <martin.bubel@itwm.fraunhofer.de>
Date: Thu, 16 Nov 2023 22:06:09 +0100
Subject: [PATCH 3/4] Update Python versions in appveyor.yml

---
 appveyor.yml | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/appveyor.yml b/appveyor.yml
index 207b0b12..e9462e6a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -5,18 +5,18 @@ environment:
     secure: d3Luic/ESkGaWnZrvWZTKrzO+xaVwJWaRCEP0F+K/9DQGPSRZsJ/Du5g3s4XF+tS
   gpy_version: 1.12.0
   matrix:
-    - PYTHON_VERSION: 3.6
-      MINICONDA: C:\Miniconda3-x64
-      MPL_VERSION: 3.3.4
-    - PYTHON_VERSION: 3.7
-      MINICONDA: C:\Miniconda3-x64
-      MPL_VERSION: 3.3.4
-    - PYTHON_VERSION: 3.8
-      MINICONDA: C:\Miniconda3-x64
-      MPL_VERSION: 3.3.4
     - PYTHON_VERSION: 3.9
       MINICONDA: C:\Miniconda3-x64
       MPL_VERSION: 3.3.4
+    - PYTHON_VERSION: 3.10
+      MINICONDA: C:\Miniconda3-x64
+      MPL_VERSION: 3.3.4
+    - PYTHON_VERSION: 3.11
+      MINICONDA: C:\Miniconda3-x64
+      MPL_VERSION: 3.3.4
+    - PYTHON_VERSION: 3.12
+      MINICONDA: C:\Miniconda3-x64
+      MPL_VERSION: 3.3.4
 
 #configuration:
 #  - Debug

From f8dc6c7657efb916441c359a8ae7684d1cc12c1f Mon Sep 17 00:00:00 2001
From: Martin Bubel <martin.bubel@itwm.fraunhofer.de>
Date: Thu, 16 Nov 2023 22:10:07 +0100
Subject: [PATCH 4/4] limit minimum python version in readme

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 5df04327..a1aa1e1b 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ If that is the case, it is best to clean the repo and reinstall.
 [<img src="https://upload.wikimedia.org/wikipedia/commons/8/8e/OS_X-Logo.svg" height=40px>](http://www.apple.com/osx/)
 [<img src="https://upload.wikimedia.org/wikipedia/commons/3/35/Tux.svg" height=40px>](https://en.wikipedia.org/wiki/List_of_Linux_distributions)
 
-Python 3.5 and higher
+Python 3.9 and higher
 
 ## Citation