diff --git a/tests/co19/co19-co19.status b/tests/co19/co19-co19.status
index 6740112f84c..68ce685b950 100644
--- a/tests/co19/co19-co19.status
+++ b/tests/co19/co19-co19.status
@@ -54,30 +54,6 @@ LibTest/collection/ListBase/*: Skip # Not migrated to NNBD
 LibTest/collection/ListMixin/*: Skip # Not migrated to NNBD
 LibTest/core/CyclicInitializationError/*: Skip # Not migrated to NNBD
 LibTest/core/int/*: Skip # Not migrated to NNBD
-LibTest/convert/AsciiCodec/*: Skip # Not migrated to NNBD
-LibTest/convert/AsciiDecoder/*: Skip # Not migrated to NNBD
-LibTest/convert/AsciiEncoder/*: Skip # Not migrated to NNBD
-LibTest/convert/Base64Codec/*: Skip # Not migrated to NNBD
-LibTest/convert/Base64Decoder/*: Skip # Not migrated to NNBD
-LibTest/convert/Base64Encoder/*: Skip # Not migrated to NNBD
-LibTest/convert/ByteConversionSink/*: Skip # Not migrated to NNBD
-LibTest/convert/ChunkedConversionSink/*: Skip # Not migrated to NNBD
-LibTest/convert/ClosableStringSink/*: Skip # Not migrated to NNBD
-LibTest/convert/Encoding/*: Skip # Not migrated to NNBD
-LibTest/convert/HtmlEscape/*: Skip # Not migrated to NNBD
-LibTest/convert/HtmlEscapeMode/*: Skip # Not migrated to NNBD
-LibTest/convert/JsonCodec/*: Skip # Not migrated to NNBD
-LibTest/convert/JsonDecoder/*: Skip # Not migrated to NNBD
-LibTest/convert/JsonEncoder/*: Skip # Not migrated to NNBD
-LibTest/convert/JsonUtf8Encoder/*: Skip # Not migrated to NNBD
-LibTest/convert/Latin1Codec/*: Skip # Not migrated to NNBD
-LibTest/convert/Latin1Decoder/*: Skip # Not migrated to NNBD
-LibTest/convert/Latin1Encoder/*: Skip # Not migrated to NNBD
-LibTest/convert/LineSplitter/*: Skip # Not migrated to NNBD
-LibTest/convert/StringConversionSink/*: Skip # Not migrated to NNBD
-LibTest/convert/Utf8Codec/*: Skip # Not migrated to NNBD
-LibTest/convert/Utf8Decoder/*: Skip # Not migrated to NNBD
-LibTest/convert/Utf8Encoder/*: Skip # Not migrated to NNBD
 LibTest/html/CanvasRenderingContext2D/*: Skip # Not migrated to NNBD
 LibTest/html/Document/*: Skip # Not migrated to NNBD
 LibTest/html/Element/*: Skip # Not migrated to NNBD