diff --git a/SPIFlash.cpp b/SPIFlash.cpp
index e250c17..63642a2 100644
--- a/SPIFlash.cpp
+++ b/SPIFlash.cpp
@@ -277,6 +277,15 @@ void SPIFlash::blockErase32K(uint32_t addr) {
   unselect();
 }
 
+/// erase a 64Kbyte block
+void SPIFlash::blockErase64K(uint32_t addr) {
+  command(SPIFLASH_BLOCKERASE_64K, true); // Block Erase
+  SPI.transfer(addr >> 16);
+  SPI.transfer(addr >> 8);
+  SPI.transfer(addr);
+  unselect();
+}
+
 void SPIFlash::sleep() {
   command(SPIFLASH_SLEEP);
   unselect();
diff --git a/SPIFlash.h b/SPIFlash.h
index 7364a8f..5a98f56 100644
--- a/SPIFlash.h
+++ b/SPIFlash.h
@@ -102,6 +102,7 @@ public:
   void chipErase();
   void blockErase4K(uint32_t address);
   void blockErase32K(uint32_t address);
+  void blockErase64K(uint32_t addr);
   uint16_t readDeviceId();
   uint8_t* readUniqueId();