diff --git a/libyul/optimiser/Suite.cpp b/libyul/optimiser/Suite.cpp
index c7339d2ea..7d52a5a8d 100644
--- a/libyul/optimiser/Suite.cpp
+++ b/libyul/optimiser/Suite.cpp
@@ -33,6 +33,7 @@
 #include <libyul/optimiser/CommonSubexpressionEliminator.h>
 #include <libyul/optimiser/SSATransform.h>
 #include <libyul/optimiser/RedundantAssignEliminator.h>
+#include <libyul/optimiser/VarDeclPropagator.h>
 
 #include <libsolidity/inlineasm/AsmAnalysisInfo.h>
 #include <libsolidity/inlineasm/AsmData.h>
@@ -65,6 +66,7 @@ void OptimiserSuite::run(
 		ExpressionSplitter{dispenser}(ast);
 		SSATransform::run(ast, dispenser);
 		RedundantAssignEliminator::run(ast);
+		VarDeclPropagator{}(ast);
 		RedundantAssignEliminator::run(ast);
 
 		CommonSubexpressionEliminator{}(ast);
@@ -90,21 +92,26 @@ void OptimiserSuite::run(
 		RedundantAssignEliminator::run(ast);
 		CommonSubexpressionEliminator{}(ast);
 		FullInliner{ast, dispenser}.run();
+		VarDeclPropagator{}(ast);
 		SSATransform::run(ast, dispenser);
 		RedundantAssignEliminator::run(ast);
+		VarDeclPropagator{}(ast);
 		RedundantAssignEliminator::run(ast);
 		ExpressionSimplifier::run(ast);
 		CommonSubexpressionEliminator{}(ast);
 		SSATransform::run(ast, dispenser);
 		RedundantAssignEliminator::run(ast);
+		VarDeclPropagator{}(ast);
 		RedundantAssignEliminator::run(ast);
 		UnusedPruner::runUntilStabilised(ast, reservedIdentifiers);
 	}
 	ExpressionJoiner::run(ast);
+	VarDeclPropagator{}(ast);
 	UnusedPruner::runUntilStabilised(ast);
 	ExpressionJoiner::run(ast);
 	UnusedPruner::runUntilStabilised(ast);
 	ExpressionJoiner::run(ast);
+	VarDeclPropagator{}(ast);
 	UnusedPruner::runUntilStabilised(ast);
 	ExpressionJoiner::run(ast);
 	UnusedPruner::runUntilStabilised(ast);
diff --git a/test/tools/yulopti.cpp b/test/tools/yulopti.cpp
index 68fc9f4f9..348c5f4a1 100644
--- a/test/tools/yulopti.cpp
+++ b/test/tools/yulopti.cpp
@@ -45,6 +45,7 @@
 #include <libyul/optimiser/ExpressionJoiner.h>
 #include <libyul/optimiser/RedundantAssignEliminator.h>
 #include <libyul/optimiser/SSATransform.h>
+#include <libyul/optimiser/VarDeclPropagator.h>
 
 #include <libdevcore/JSON.h>
 
@@ -120,7 +121,7 @@ public:
 				m_nameDispenser = make_shared<NameDispenser>(*m_ast);
 				disambiguated = true;
 			}
-			cout << "(q)quit/(f)flatten/(c)se/(x)plit/(j)oin/(g)rouper/(h)oister/" << endl;
+			cout << "(q)quit/(f)flatten/(c)se/propagate var(d)ecls/(x)plit/(j)oin/(g)rouper/(h)oister/" << endl;
 			cout << "  (e)xpr inline/(i)nline/(s)implify/(u)nusedprune/ss(a) transform/" << endl;
 			cout << "  (r)edundant assign elim./re(m)aterializer? ";
 			cout.flush();
@@ -136,6 +137,9 @@ public:
 			case 'c':
 				(CommonSubexpressionEliminator{})(*m_ast);
 				break;
+			case 'd':
+				(VarDeclPropagator{})(*m_ast);
+				break;
 			case 'x':
 				ExpressionSplitter{*m_nameDispenser}(*m_ast);
 				break;