How to list imported functions (.plt) for an ELF executable without disassembling using objdump?

Currently, I check for imported functions (.plt) using objdump: objdump -D -j .plt myprog | grep '@plt' However, it doesn't seem right to have objdump output annotated disassembly to grep to list imported (.plt) functions. To check exported functions, I use readelf -s myprog, but the imported .plt functions doesn't show up here? How can I list all imported (.plt) function in an ELF executable?