diff --git a/tests/micropython/heapalloc_bytesio.py b/tests/micropython/heapalloc_bytesio.py
index 3116328518..2a8d50abe3 100644
--- a/tests/micropython/heapalloc_bytesio.py
+++ b/tests/micropython/heapalloc_bytesio.py
@@ -1,4 +1,10 @@
-import uio
+try:
+    import uio
+except ImportError:
+    import sys
+    print("SKIP")
+    sys.exit()
+
 import micropython
 
 data = b"1234" * 16
diff --git a/tests/micropython/heapalloc_traceback.py b/tests/micropython/heapalloc_traceback.py
index 808df0225c..b3795293f3 100644
--- a/tests/micropython/heapalloc_traceback.py
+++ b/tests/micropython/heapalloc_traceback.py
@@ -2,7 +2,12 @@
 
 import micropython
 import sys
-import uio
+try:
+    import uio
+except ImportError:
+    import sys
+    print("SKIP")
+    sys.exit()
 
 # preallocate exception instance with some room for a traceback
 global_exc = StopIteration()