diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eec89b2..079ba45 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
 
         strategy:
             matrix:
-                python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+                python-version: ['3.9', '3.10', '3.11', '3.12']
 
         services:
             postgres:
diff --git a/pyproject.toml b/pyproject.toml
index c673c84..34ddc48 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,6 @@ classifiers = [
     'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
     'Programming Language :: Python :: 3.12',
-    'Programming Language :: Python :: 3.13',
 ]
 keywords = ['aiida', 'workflows']
 requires-python = '>=3.8'