diff --git a/changelog-entries/448.md b/changelog-entries/448.md
new file mode 100644
index 000000000..ce573588a
--- /dev/null
+++ b/changelog-entries/448.md
@@ -0,0 +1 @@
+- Add perpendicular-flap {fluid-openfoam, solid-openfoam} and {fluid-openfoam, solid-fenics} case combinations to system tests (openfoam_adapter_pr, fenics_test, and release_test suites) (refs #448).
diff --git a/tools/tests/tests.yaml b/tools/tests/tests.yaml
index cc18820ea..1ca9f64e8 100644
--- a/tools/tests/tests.yaml
+++ b/tools/tests/tests.yaml
@@ -11,6 +11,11 @@ test_suites:
           - fluid-openfoam
           - solid-calculix
         reference_result: ./perpendicular-flap/reference-results/fluid-openfoam_solid-calculix.tar.gz
+      - path: perpendicular-flap
+        case_combination:
+          - fluid-openfoam
+          - solid-openfoam
+        reference_result: ./perpendicular-flap/reference-results/fluid-openfoam_solid-openfoam.tar.gz
   openfoam_adapter_release:
     tutorials:
       - path: flow-over-heated-plate
@@ -25,6 +30,11 @@ test_suites:
          - fluid-openfoam
          - solid-fenics
         reference_result: ./flow-over-heated-plate/reference-results/fluid-openfoam_solid-fenics.tar.gz
+      - path: perpendicular-flap
+        case_combination:
+          - fluid-openfoam
+          - solid-fenics
+        reference_result: ./perpendicular-flap/reference-results/fluid-openfoam_solid-fenics.tar.gz
   nutils_test:
     tutorials:
       - path: flow-over-heated-plate
@@ -135,6 +145,16 @@ test_suites:
           - fluid-openfoam
           - solid-dealii
         reference_result: ./perpendicular-flap/reference-results/fluid-openfoam_solid-dealii.tar.gz
+      - path: perpendicular-flap
+        case_combination:
+          - fluid-openfoam
+          - solid-openfoam
+        reference_result: ./perpendicular-flap/reference-results/fluid-openfoam_solid-openfoam.tar.gz
+      - path: perpendicular-flap
+        case_combination:
+          - fluid-openfoam
+          - solid-fenics
+        reference_result: ./perpendicular-flap/reference-results/fluid-openfoam_solid-fenics.tar.gz
       - path: multiple-perpendicular-flaps
         case_combination:
           - fluid-openfoam