diff --git a/.github/workflows/MainDistributionPipeline.yml b/.github/workflows/MainDistributionPipeline.yml
index 63463dc..0319591 100644
--- a/.github/workflows/MainDistributionPipeline.yml
+++ b/.github/workflows/MainDistributionPipeline.yml
@@ -14,21 +14,21 @@ concurrency:
 jobs:
   duckdb-stable-build:
     name: Build extension binaries
-    uses: duckdb/extension-ci-tools/.github/workflows/_extension_distribution.yml@v1.4.0
+    uses: duckdb/extension-ci-tools/.github/workflows/_extension_distribution.yml@main
     with:
       extension_name: sqlsmith
-      duckdb_version: v1.4.0
-      ci_tools_version: v1.4.0
+      duckdb_version: f59749da9cff1eb1d59be8b6449c8d607cac975f
+      ci_tools_version: main
       exclude_archs: ''
 
   duckdb-stable-deploy:
     name: Deploy extension binaries
     needs: duckdb-stable-build
-    uses: duckdb/extension-ci-tools/.github/workflows/_extension_deploy.yml@v1.4.0
+    uses: duckdb/extension-ci-tools/.github/workflows/_extension_deploy.yml@main
     secrets: inherit
     with:
       extension_name: sqlsmith
-      duckdb_version: v1.4.0
-      ci_tools_version: v1.4.0
+      duckdb_version: f59749da9cff1eb1d59be8b6449c8d607cac975f
+      ci_tools_version: main
       exclude_archs: ''
       deploy_latest: ${{ startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/main' }}
diff --git a/duckdb b/duckdb
index b8a06e4..f59749d 160000
--- a/duckdb
+++ b/duckdb
@@ -1 +1 @@
-Subproject commit b8a06e4a22672e254cd0baa68a3dbed2eb51c56e
+Subproject commit f59749da9cff1eb1d59be8b6449c8d607cac975f
diff --git a/src/include/statement_generator.hpp b/src/include/statement_generator.hpp
index 57e8446..f436275 100644
--- a/src/include/statement_generator.hpp
+++ b/src/include/statement_generator.hpp
@@ -11,6 +11,8 @@
 #include "duckdb.hpp"
 #include "duckdb/parser/parsed_data/detach_info.hpp"
 #include "duckdb/parser/query_node.hpp"
+#include "duckdb/parser/statement/list.hpp"
+#include "duckdb/parser/statement/multi_statement.hpp"
 
 #define TESTING_DIRECTORY_NAME "duckdb_unittest_tempdir"
 
diff --git a/src/statement_generator.cpp b/src/statement_generator.cpp
index 455833b..b8ffe8b 100644
--- a/src/statement_generator.cpp
+++ b/src/statement_generator.cpp
@@ -373,8 +373,9 @@ unique_ptr<QueryNode> StatementGenerator::GenerateQueryNode() {
 		GenerateCTEs(*setop);
 		setop->setop_type = Choose<SetOperationType>({SetOperationType::EXCEPT, SetOperationType::INTERSECT,
 		                                              SetOperationType::UNION, SetOperationType::UNION_BY_NAME});
-		setop->left = GenerateQueryNode();
-		setop->right = GenerateQueryNode();
+		for(idx_t i = 0; i < 2; i++) {
+			setop->children.push_back(GenerateQueryNode());
+		}
 		switch (setop->setop_type) {
 		case SetOperationType::EXCEPT:
 		case SetOperationType::INTERSECT:
diff --git a/src/statement_simplifier.cpp b/src/statement_simplifier.cpp
index 2cd7f06..4602928 100644
--- a/src/statement_simplifier.cpp
+++ b/src/statement_simplifier.cpp
@@ -196,8 +196,9 @@ void StatementSimplifier::Simplify(SelectNode &node) {
 }
 
 void StatementSimplifier::Simplify(SetOperationNode &node) {
-	Simplify(node.left);
-	Simplify(node.right);
+	for(auto &child : node.children) {
+		Simplify(child);
+	}
 }
 
 void StatementSimplifier::Simplify(CommonTableExpressionMap &cte) {
@@ -218,8 +219,9 @@ void StatementSimplifier::Simplify(unique_ptr<QueryNode> &node) {
 		break;
 	case QueryNodeType::SET_OPERATION_NODE: {
 		auto &setop = node->Cast<SetOperationNode>();
-		SimplifyReplace(node, setop.left);
-		SimplifyReplace(node, setop.right);
+		for(auto &child : setop.children) {
+			SimplifyReplace(node, child);
+		}
 		Simplify(setop);
 		break;
 	}