diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 86a0f0a725a..00c5aaadb7e 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -57,7 +57,7 @@ jobs:
           # $CONDA is an environment variable pointing to the root of the miniconda directory
           # Preprend $CONDA/bin to $PATH so that conda's python is used over system python
           echo $CONDA/bin >> $GITHUB_PATH
-          conda install --solver=libmamba gmt=6.4.0 python=3.12 \
+          conda install --solver=libmamba gmt=6.5.0 python=3.12 \
                         numpy pandas xarray netCDF4 packaging \
                         geopandas pyarrow pytest pytest-mpl
           python -m pip install -U pytest-codspeed setuptools
diff --git a/.github/workflows/cache_data.yaml b/.github/workflows/cache_data.yaml
index 2b343085382..295f9274e95 100644
--- a/.github/workflows/cache_data.yaml
+++ b/.github/workflows/cache_data.yaml
@@ -47,7 +47,7 @@ jobs:
               - nodefaults
           create-args: >-
             python=3.12
-            gmt=6.4.0
+            gmt=6.5.0
             numpy
             pandas
             xarray
diff --git a/.github/workflows/check-links.yml b/.github/workflows/check-links.yml
index 9ce7fe68227..d1aaa62eb84 100644
--- a/.github/workflows/check-links.yml
+++ b/.github/workflows/check-links.yml
@@ -48,8 +48,8 @@ jobs:
           --exclude "^https://github.com/GenericMappingTools/gmt/releases/tag/X.Y.Z$"
           --exclude "^git"
           --exclude "^file://"
-          --exclude "^https://docs.generic-mapping-tools.org/6.4/%s$"
-          --exclude "^https://docs.generic-mapping-tools.org/6.4/%3Cmodule-name%3E.html$"
+          --exclude "^https://docs.generic-mapping-tools.org/6.5/%s$"
+          --exclude "^https://docs.generic-mapping-tools.org/6.5/%3Cmodule-name%3E.html$"
           --exclude "^https://www.generic-mapping-tools.org/remote-datasets/%s$"
           --exclude "^https://hackmd.io/@pygmt"
           --exclude "^https://doi.org"
diff --git a/.github/workflows/ci_docs.yml b/.github/workflows/ci_docs.yml
index 25e944986eb..5c5899266d6 100644
--- a/.github/workflows/ci_docs.yml
+++ b/.github/workflows/ci_docs.yml
@@ -86,7 +86,7 @@ jobs:
           cache-environment: true
           create-args: >-
             python=3.12
-            gmt=6.4.0
+            gmt=6.5.0
             ghostscript=9.54.0
             numpy
             pandas
diff --git a/.github/workflows/ci_doctests.yaml b/.github/workflows/ci_doctests.yaml
index 955d9f95889..b353f8f47f5 100644
--- a/.github/workflows/ci_doctests.yaml
+++ b/.github/workflows/ci_doctests.yaml
@@ -50,7 +50,7 @@ jobs:
               - nodefaults
           create-args: >-
             python=3.12
-            gmt=6.4.0
+            gmt=6.5.0
             numpy
             pandas
             xarray
diff --git a/.github/workflows/ci_tests.yaml b/.github/workflows/ci_tests.yaml
index f6cb2821f48..33b2e992918 100644
--- a/.github/workflows/ci_tests.yaml
+++ b/.github/workflows/ci_tests.yaml
@@ -104,7 +104,7 @@ jobs:
           cache-environment: true
           create-args: >-
             python=${{ matrix.python-version }}${{ matrix.optional-packages }}
-            gmt=6.4.0
+            gmt=6.5.0
             ghostscript=9.54.0
             numpy=${{ matrix.numpy-version }}
             pandas
diff --git a/.github/workflows/ci_tests_legacy.yaml b/.github/workflows/ci_tests_legacy.yaml
index f36355dba65..2b9ac432814 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']
+        gmt_version: ['6.3', '6.4']
     timeout-minutes: 30
     defaults:
       run:
diff --git a/ci/requirements/docs.yml b/ci/requirements/docs.yml
index d97927ce5ee..b4593e530ec 100644
--- a/ci/requirements/docs.yml
+++ b/ci/requirements/docs.yml
@@ -5,7 +5,7 @@ channels:
 dependencies:
     # Required dependencies
     - python=3.12
-    - gmt=6.4.0
+    - gmt=6.5.0
     - ghostscript=9.54.0
     - numpy>=1.22
     - pandas
diff --git a/doc/conf.py b/doc/conf.py
index 6cbacf7f1b8..e023f0061a9 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -47,8 +47,8 @@
 
 # configure links to GMT docs
 extlinks = {
-    "gmt-docs": ("https://docs.generic-mapping-tools.org/6.4/%s", None),
-    "gmt-term": ("https://docs.generic-mapping-tools.org/6.4/gmt.conf#term-%s", "%s"),
+    "gmt-docs": ("https://docs.generic-mapping-tools.org/6.5/%s", None),
+    "gmt-term": ("https://docs.generic-mapping-tools.org/6.5/gmt.conf#term-%s", "%s"),
     "gmt-datasets": ("https://www.generic-mapping-tools.org/remote-datasets/%s", None),
 }
 
diff --git a/environment.yml b/environment.yml
index de6870344bd..d739aa557fe 100644
--- a/environment.yml
+++ b/environment.yml
@@ -5,7 +5,7 @@ channels:
 dependencies:
     - python=3.12
     # Required dependencies
-    - gmt=6.4.0
+    - gmt=6.5.0
     - numpy>=1.22
     - pandas
     - xarray