diff --git a/Makefile b/Makefile
index 980ba48..0c688b8 100644
--- a/Makefile
+++ b/Makefile
@@ -7,6 +7,8 @@ UNZIP = unzip -q -o
 VENDOR_SDK_ZIP = $(VENDOR_SDK_ZIP_$(VENDOR_SDK))
 VENDOR_SDK_DIR = $(VENDOR_SDK_DIR_$(VENDOR_SDK))
 
+VENDOR_SDK_ZIP_1.0.1b1 = esp_iot_sdk_v1.0.1_b1_15_04_02.zip
+VENDOR_SDK_DIR_1.0.1b1 = esp_iot_sdk_v1.0.1_b1
 VENDOR_SDK_ZIP_1.0.0 = esp_iot_sdk_v1.0.0_15_03_20.zip
 VENDOR_SDK_DIR_1.0.0 = esp_iot_sdk_v1.0.0
 VENDOR_SDK_ZIP_0.9.6b1 = esp_iot_sdk_v0.9.6_b1_15_02_15.zip
@@ -52,6 +54,10 @@ libcirom: $(TOOLCHAIN)/xtensa-lx106-elf/sysroot/lib/libcirom.a
 
 sdk_patch: .sdk_patch_$(VENDOR_SDK)
 
+.sdk_patch_1.0.1b1:
+	patch -d $(VENDOR_SDK_DIR_1.0.1b1) -p1 < c_types-c99.patch
+	@touch $@
+
 .sdk_patch_1.0.0:
 	patch -d $(VENDOR_SDK_DIR_1.0.0) -p1 < c_types-c99.patch
 	@touch $@
@@ -106,6 +112,9 @@ $(VENDOR_SDK_DIR)/.dir: $(VENDOR_SDK_ZIP)
 	-mv License $(VENDOR_SDK_DIR)
 	touch $@
 
+esp_iot_sdk_v1.0.1_b1_15_04_02.zip:
+	wget --content-disposition "http://bbs.espressif.com/download/file.php?id=276"
+
 esp_iot_sdk_v1.0.0_15_03_20.zip:
 	wget --content-disposition "http://bbs.espressif.com/download/file.php?id=250"