diff --git a/Makefile b/Makefile
index 253f8cae..d258fe08 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,7 @@ STRIP ?= strip
 
 SOURCES += dep/nanovg/src/nanovg.c
 SOURCES += dep/osdialog/osdialog.c
+SOURCES += $(wildcard dep/jpommier-pffft-*/pffft.c) $(wildcard dep/jpommier-pffft-*/fftpack.c)
 SOURCES += $(wildcard src/*.cpp src/*/*.cpp)
 
 ifdef ARCH_MAC
diff --git a/dep.mk b/dep.mk
index 48b3c290..6ad37f06 100644
--- a/dep.mk
+++ b/dep.mk
@@ -15,7 +15,7 @@ DEP_CXXFLAGS += $(DEP_FLAGS)
 # Commands
 WGET := wget -c
 UNTAR := tar xf
-UNZIP := unzip
+UNZIP := unzip -o
 CONFIGURE := ./configure --prefix="$(realpath $(DEP_LOCAL))"
 ifeq ($(ARCH), win)
 	CMAKE := cmake -G 'MSYS Makefiles' -DCMAKE_INSTALL_PREFIX="$(realpath $(DEP_LOCAL))"
diff --git a/dep/Makefile b/dep/Makefile
index ae9a4305..5a9f16c4 100755
--- a/dep/Makefile
+++ b/dep/Makefile
@@ -49,8 +49,9 @@ nanovg = include/nanovg.h
 nanosvg = include/nanosvg.h
 oui-blendish = include/blendish.h
 osdialog = include/osdialog.h
+pffft = include/pffft.h
 
-DEPS += $(glew) $(glfw) $(jansson) $(libspeexdsp) $(libcurl) $(libzip) $(rtmidi) $(rtaudio) $(nanovg) $(nanosvg) $(oui-blendish) $(osdialog)
+DEPS += $(glew) $(glfw) $(jansson) $(libspeexdsp) $(libcurl) $(libzip) $(rtmidi) $(rtaudio) $(nanovg) $(nanosvg) $(oui-blendish) $(osdialog) $(pffft)
 include $(RACK_DIR)/dep.mk
 
 
@@ -158,6 +159,11 @@ $(oui-blendish): $(wildcard oui-blendish/*.h)
 $(osdialog): $(wildcard osdialog/*.h)
 	cp $^ include/
 
+$(pffft):
+	$(WGET) "https://bitbucket.org/jpommier/pffft/get/29e4f76ac53b.zip"
+	$(UNZIP) 29e4f76ac53b.zip
+	cp jpommier-pffft-29e4f76ac53b/*.h include/
+
 clean:
 	git clean -fdx
 	git submodule foreach git clean -fdx