diff --git a/src/tools/signatures/mysignatures.txt b/src/tools/signatures/mysignatures.txt
index de943e03..96262d93 100644
--- a/src/tools/signatures/mysignatures.txt
+++ b/src/tools/signatures/mysignatures.txt
@@ -22,3 +22,4 @@ org.objectweb.asm.ClassReader#<init>(java.lang.String)
 
 # Some buggy methods:
 java.io.InputStream#available() @ This may return small numbers and relies on underlying implementation
+java.io.InputStream#skip(long) @ Relies on underlying implementation -- see https://issues.apache.org/jira/browse/IO-203 and use IOUtils.skipFully(long)
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