From f9fbdaaf774ca5b534676d0d9c433237d8c356b1 Mon Sep 17 00:00:00 2001
From: Michael Grund <23025878+michaelgrund@users.noreply.github.com>
Date: Mon, 8 Jan 2024 08:08:21 +0100
Subject: [PATCH 1/4] Update session.py

---
 pygmt/clib/session.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pygmt/clib/session.py b/pygmt/clib/session.py
index ea5b3e0eff2..f29ee94b04d 100644
--- a/pygmt/clib/session.py
+++ b/pygmt/clib/session.py
@@ -148,7 +148,7 @@ class Session:
     """
 
     # The minimum version of GMT required
-    required_version = "6.3.0"
+    required_version = "6.5.0"
 
     @property
     def session_pointer(self):

From fc55643c54770b67b7498ffb5ed34228449f1993 Mon Sep 17 00:00:00 2001
From: Michael Grund <23025878+michaelgrund@users.noreply.github.com>
Date: Mon, 8 Jan 2024 08:13:40 +0100
Subject: [PATCH 2/4] Update test_clib.py

---
 pygmt/tests/test_clib.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pygmt/tests/test_clib.py b/pygmt/tests/test_clib.py
index ffb7a6bde41..7c895bf5358 100644
--- a/pygmt/tests/test_clib.py
+++ b/pygmt/tests/test_clib.py
@@ -503,7 +503,7 @@ def test_get_default():
     with clib.Session() as lib:
         assert lib.get_default("API_GRID_LAYOUT") in ["rows", "columns"]
         assert int(lib.get_default("API_CORES")) >= 1
-        assert Version(lib.get_default("API_VERSION")) >= Version("6.3.0")
+        assert Version(lib.get_default("API_VERSION")) >= Version("6.5.0")
 
 
 def test_get_default_fails():

From 3187bcdbbab0057e64a13235c06a04c15781667c Mon Sep 17 00:00:00 2001
From: Michael Grund <23025878+michaelgrund@users.noreply.github.com>
Date: Mon, 8 Jan 2024 08:14:42 +0100
Subject: [PATCH 3/4] Update README.rst

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

diff --git a/README.rst b/README.rst
index 65a549770e5..3718c2b4426 100644
--- a/README.rst
+++ b/README.rst
@@ -266,7 +266,7 @@ Compatibility with GMT/Python/NumPy versions
       - NumPy
     * - `Dev <https://github.com/GenericMappingTools/pygmt/milestones>`_ (upcoming release)
       - `Dev Documentation <https://www.pygmt.org/dev>`_ (reflects `main branch <https://github.com/GenericMappingTools/pygmt>`_)
-      - >=6.3.0
+      - >=6.5.0
       - >=3.9
       - >=1.22
     * - `v0.10.0 <https://github.com/GenericMappingTools/pygmt/releases/tag/v0.10.0>`_ (latest release)

From 2c3c3338f524f095ec355e4bfc45f2b6639ac48f Mon Sep 17 00:00:00 2001
From: Michael Grund <23025878+michaelgrund@users.noreply.github.com>
Date: Mon, 8 Jan 2024 08:16:51 +0100
Subject: [PATCH 4/4] Update ci_tests_legacy.yaml

---
 .github/workflows/ci_tests_legacy.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci_tests_legacy.yaml b/.github/workflows/ci_tests_legacy.yaml
index 2b9ac432814..abd3953bf34 100644
--- a/.github/workflows/ci_tests_legacy.yaml
+++ b/.github/workflows/ci_tests_legacy.yaml
@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-20.04, macos-11, windows-2019]
-        gmt_version: ['6.3', '6.4']
+        gmt_version: ['6.4', '6.5']
     timeout-minutes: 30
     defaults:
       run: