diff --git a/pyproject.toml b/pyproject.toml
index f58c354a..2913221f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ test = [
     "polytope",
     "cvxpy",
     "gurobipy",
-    "pyscipopt==4.3.0",
+    "pyscipopt==5.1.1",
 ]
 dev = [
     "pre-commit >=2.12.1",