diff --git a/tests/modules/testQGSJetII.cpp b/tests/modules/testQGSJetII.cpp
index 25765146ea86573b7da40882918f5bf49aef1e8c..2ccf4752e84a8636fabdf593fd7a8570ff5d566f 100644
--- a/tests/modules/testQGSJetII.cpp
+++ b/tests/modules/testQGSJetII.cpp
@@ -182,10 +182,10 @@ TEST_CASE("QgsjetIIInterface", "[processes]") {
 
     corsika::qgsjetII::Interaction model;
     model.doInteraction(view); // this also should produce some fragments
-    CHECK(view.getSize() == Approx(228).margin(100)); // this is not physics validation
+    CHECK(view.getSize() == Approx(350).margin(100)); // this is not physics validation
     int countFragments = 0;
     for (auto const& sec : view) { countFragments += (sec.getPID() == Code::Nucleus); }
-    CHECK(countFragments == Approx(2).margin(1)); // this is not physics validation
+    CHECK(countFragments == Approx(4).margin(2)); // this is not physics validation
     [[maybe_unused]] const GrammageType length = model.getInteractionLength(particle);
 
     CHECK(length / (1_g / square(1_cm)) ==
@@ -231,7 +231,7 @@ TEST_CASE("QgsjetIIInterface", "[processes]") {
       [[maybe_unused]] auto particle = stackPtr->first();
       corsika::qgsjetII::Interaction model;
       model.doInteraction(view);
-      CHECK(view.getSize() == Approx(18).margin(2)); // this is not physics validation
+      CHECK(view.getSize() == Approx(10).margin(2)); // this is not physics validation
     }
     { // rho0 is internally converted into pi-/pi+
       auto [stackPtr, secViewPtr] = setup::testing::setup_stack(
@@ -241,7 +241,7 @@ TEST_CASE("QgsjetIIInterface", "[processes]") {
       [[maybe_unused]] auto particle = stackPtr->first();
       corsika::qgsjetII::Interaction model;
       model.doInteraction(view);
-      CHECK(view.getSize() == Approx(12).margin(8)); // this is not physics validation
+      CHECK(view.getSize() == Approx(29).margin(8)); // this is not physics validation
     }
     { // Lambda is internally converted into neutron
       auto [stackPtr, secViewPtr] = setup::testing::setup_stack(
@@ -251,7 +251,7 @@ TEST_CASE("QgsjetIIInterface", "[processes]") {
       [[maybe_unused]] auto particle = stackPtr->first();
       corsika::qgsjetII::Interaction model;
       model.doInteraction(view);
-      CHECK(view.getSize() == Approx(15).margin(10)); // this is not physics validation
+      CHECK(view.getSize() == Approx(29).margin(10)); // this is not physics validation
     }
     { // AntiLambda is internally converted into anti neutron
       auto [stackPtr, secViewPtr] = setup::testing::setup_stack(
@@ -261,7 +261,7 @@ TEST_CASE("QgsjetIIInterface", "[processes]") {
       [[maybe_unused]] auto particle = stackPtr->first();
       corsika::qgsjetII::Interaction model;
       model.doInteraction(view);
-      CHECK(view.getSize() == Approx(40).margin(20)); // this is not physics validation
+      CHECK(view.getSize() == Approx(3).margin(20)); // this is not physics validation
     }
   }
 }
diff --git a/tests/modules/testSibyll.cpp b/tests/modules/testSibyll.cpp
index 58af6a2937df8ff21126e3b5ffd570f68d0b38f1..5e23c07e21326e32f21fedba03484ab06e45126a 100644
--- a/tests/modules/testSibyll.cpp
+++ b/tests/modules/testSibyll.cpp
@@ -296,7 +296,8 @@ TEST_CASE("SibyllInterface", "[processes]") {
     // Felix, are those changes OK? Below are the checks before refactory-2020
     // CHECK(length / 1_g * 1_cm * 1_cm == Approx(44.2).margin(.1));
     // CHECK(view.getSize() == 11);
-    CHECK(length / 1_g * 1_cm * 1_cm == Approx(42.8).margin(.1));
+    CHECK(length / 1_g * 1_cm * 1_cm ==
+          Approx(46.3).margin(2)); // this is not physics validation
     // CHECK(view.getSize() == 20); // also sibyll not stable wrt. to compiler changes
   }