diff --git a/test/test_targets.py b/test/test_targets.py
index e583359..8edccd3 100644
--- a/test/test_targets.py
+++ b/test/test_targets.py
@@ -19,7 +19,8 @@ class TestTargets(unittest.TestCase):
         "qmtech_rp2040_daughterboard",       # Reason: Not a real platform.
         "enclustra_st1",                     # Readon: Not a real platform.
         "quicklogic_quickfeather",           # Reason: No default clock.
-        "colognechip_gatemate_evb",          # Reason: toolchain not yet mainlined
+        "colognechip_gatemate_evb",          # Reason: Toolchain not yet mainlined.
+        "efinix_ti375_c529_dev_kit",         # Reason: Require Efinity toolchain.
         "efinix_titanium_ti60_f225_dev_kit", # Reason: Require Efinity toolchain.
         "efinix_trion_t120_bga576_dev_kit",  # Reason: Require Efinity toolchain.
         "efinix_trion_t20_bga256_dev_kit",   # Reason: Require Efinity toolchain.
@@ -34,7 +35,8 @@ class TestTargets(unittest.TestCase):
     excluded_targets   = [
         "simple",                            # Reason: Generic target.
         "quicklogic_quickfeather",           # Reason: No default clock.
-        "colognechip_gatemate_evb",          # Reason: toolchain not yet mainlined
+        "colognechip_gatemate_evb",          # Reason: Toolchain not yet mainlined.
+        "efinix_ti375_c529_dev_kit",         # Reason: Require Efinity toolchain.
         "efinix_titanium_ti60_f225_dev_kit", # Reason: Require Efinity toolchain.
         "efinix_trion_t120_bga576_dev_kit",  # Reason: Require Efinity toolchain.
         "efinix_trion_t20_bga256_dev_kit",   # Reason: Require Efinity toolchain.