diff --git a/core-writer/external/bitshuffle/bitshuffle.c b/core-writer/external/bitshuffle/bitshuffle.cpp
similarity index 100%
rename from core-writer/external/bitshuffle/bitshuffle.c
rename to core-writer/external/bitshuffle/bitshuffle.cpp
diff --git a/core-writer/external/bitshuffle/bitshuffle_core.c b/core-writer/external/bitshuffle/bitshuffle_core.cpp
similarity index 100%
rename from core-writer/external/bitshuffle/bitshuffle_core.c
rename to core-writer/external/bitshuffle/bitshuffle_core.cpp