diff --git a/src/gt4py/next/ffront/func_to_past.py b/src/gt4py/next/ffront/func_to_past.py
index f415c95b63..09f53be600 100644
--- a/src/gt4py/next/ffront/func_to_past.py
+++ b/src/gt4py/next/ffront/func_to_past.py
@@ -64,7 +64,7 @@ def func_to_past(inp: DSL_PRG) -> PRG:
     )
 
 
-def func_to_past_factory(cached: bool = False) -> workflow.Workflow[DSL_PRG, PRG]:
+def func_to_past_factory(cached: bool = True) -> workflow.Workflow[DSL_PRG, PRG]:
     """
     Wrap `func_to_past` in a chainable and optionally cached workflow step.
 
diff --git a/src/gt4py/next/ffront/stages.py b/src/gt4py/next/ffront/stages.py
index bf3bee4b56..fed02da305 100644
--- a/src/gt4py/next/ffront/stages.py
+++ b/src/gt4py/next/ffront/stages.py
@@ -100,6 +100,7 @@ def add_content_to_fingerprint(obj: Any, hasher: xtyping.HashlibAlgorithm) -> No
 
 @add_content_to_fingerprint.register(FieldOperatorDefinition)
 @add_content_to_fingerprint.register(FoastOperatorDefinition)
+@add_content_to_fingerprint.register(ProgramDefinition)
 @add_content_to_fingerprint.register(PastProgramDefinition)
 @add_content_to_fingerprint.register(toolchain.CompilableProgram)
 @add_content_to_fingerprint.register(arguments.CompileTimeArgs)
@@ -121,6 +122,10 @@ def add_func_to_fingerprint(obj: types.FunctionType, hasher: xtyping.HashlibAlgo
     for item in sourcedef:
         add_content_to_fingerprint(item, hasher)
 
+    closure_vars = source_utils.get_closure_vars_from_function(obj)
+    for item in sorted(closure_vars.items(), key=lambda x: x[0]):
+        add_content_to_fingerprint(item, hasher)
+
 
 @add_content_to_fingerprint.register
 def add_dict_to_fingerprint(obj: dict, hasher: xtyping.HashlibAlgorithm) -> None:
diff --git a/tests/next_tests/integration_tests/feature_tests/ffront_tests/test_execution.py b/tests/next_tests/integration_tests/feature_tests/ffront_tests/test_execution.py
index 36d6debf9d..b91527b492 100644
--- a/tests/next_tests/integration_tests/feature_tests/ffront_tests/test_execution.py
+++ b/tests/next_tests/integration_tests/feature_tests/ffront_tests/test_execution.py
@@ -825,10 +825,16 @@ def simple_scan_operator(
     ) -> tuple[int32, tuple[int32, int32]]:
         return (carry[0] + 1, (carry[1][0] + 1, carry[1][1] + 1))
 
-    @gtx.program
+    # @gtx.program
     def testee(out: tuple[cases.KField, tuple[cases.KField, cases.KField]]):
         simple_scan_operator(out=out)
 
+    print(type(testee))
+    dsl_definition = gtx.ffront.stages.ProgramDefinition(definition=testee)
+    print(type(dsl_definition))
+    print(f"{dsl_definition=}")
+    past_definition = gtx.ffront.func_to_past.func_to_past(dsl_definition)
+
     cases.verify_with_default_data(
         cartesian_case,
         testee,