diff --git a/Dockerfile b/Dockerfile
index 99694a5..edb89dc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,8 @@
 FROM ubuntu:20.10 as base
 
+ARG ARCH
+ENV ARCH=$ARCH
+
 ENV TZ=US/Eastern
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 RUN apt-get update
@@ -7,11 +10,14 @@ RUN apt-get install -y build-essential curl git
 
 FROM base as builder
 
+RUN apt-get install -y unzip
 # otfcc depends on premake5
 WORKDIR /tmp
 ENV PREMAKE_VERSION 5.0.0-alpha15
-RUN curl -sL https://github.com/premake/premake-core/releases/download/v${PREMAKE_VERSION}/premake-${PREMAKE_VERSION}-linux.tar.gz | tar -xzC /tmp
-RUN mv /tmp/premake5 /usr/local/bin/premake5
+RUN curl -O -sL https://github.com/premake/premake-core/releases/download/v${PREMAKE_VERSION}/premake-${PREMAKE_VERSION}-src.zip && unzip premake-${PREMAKE_VERSION}-src.zip
+# RUN curl -sL https://github.com/premake/premake-core/releases/download/v${PREMAKE_VERSION}/premake-${PREMAKE_VERSION}-linux.tar.gz | tar -xzC /tmp
+RUN cd premake-${PREMAKE_VERSION}/build/gmake2.unix && make
+RUN mv /tmp/premake-${PREMAKE_VERSION}/bin/release/premake5 /usr/local/bin/premake5
 
 # otfcc
 WORKDIR /tmp
@@ -19,11 +25,13 @@ ENV OTFCC_VERSION=0.10.4
 RUN curl -sL https://github.com/caryll/otfcc/archive/v${OTFCC_VERSION}.tar.gz | tar -xzC /tmp
 RUN mv otfcc-${OTFCC_VERSION} otfcc
 WORKDIR /tmp/otfcc
-RUN premake5 gmake && cd build/gmake && make config=release_x64
+COPY p0.patch /tmp/otfcc/p0.patch
+RUN patch -u premake5.lua p0.patch
+RUN premake5 gmake && cd build/gmake && make config=release_${ARCH}
 
 FROM base
-COPY --from=builder /tmp/otfcc/bin/release-x64/otfccbuild /usr/local/bin/otfccbuild
-COPY --from=builder /tmp/otfcc/bin/release-x64/otfccdump /usr/local/bin/otfccdump 
+COPY --from=builder /tmp/otfcc/bin/release-${ARCH}/otfccbuild /usr/local/bin/otfccbuild
+COPY --from=builder /tmp/otfcc/bin/release-${ARCH}/otfccdump /usr/local/bin/otfccdump 
 
 # NodeJS >= 12.16.0
 RUN curl -sL https://deb.nodesource.com/setup_14.x | bash -
diff --git a/justfile b/justfile
index cd4736f..7154890 100644
--- a/justfile
+++ b/justfile
@@ -1,5 +1,7 @@
+ARCH := if arch() == "aarch64" { "arm64" } else { "x64" }
+
 docker-build:
-    DOCKER_BUILDKIT=1 docker build -t iosevka .
+    DOCKER_BUILDKIT=1 docker build --build-arg ARCH="{{ARCH}}" -t iosevka .
 
 docker-run: docker-build
     docker run -it iosevka
diff --git a/p0.patch b/p0.patch
new file mode 100644
index 0000000..40520e9
--- /dev/null
+++ b/p0.patch
@@ -0,0 +1,11 @@
+--- premake5.lua	2020-12-20 03:44:14.574580005 +0000
++++ premake5.lua.new	2020-12-20 03:43:50.664794008 +0000
+@@ -49,7 +49,7 @@
+ workspace "otfcc"
+ 	configurations { "release", "debug" }
+ 	
+-	platforms { "x64", "x86" }
++	platforms { "x64", "x86", "arm64" }
+ 	filter "action:xcode4"
+ 		platforms { "x64" }
+ 	filter {}