diff --git a/Dockerfile b/Dockerfile
index 972dacb..a62ce48 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,13 +12,13 @@ RUN apt-get install -y ttfautohint
 
 # otfcc depends on premake5
 WORKDIR /tmp
-RUN curl -sLo premake5.tar.gz https://github.com/premake/premake-core/releases/download/v5.0.0-alpha11/premake-5.0.0-alpha11-linux.tar.gz
+RUN curl -sLo premake5.tar.gz https://github.com/premake/premake-core/releases/download/v5.0.0-alpha14/premake-5.0.0-alpha14-linux.tar.gz
 RUN tar xvf premake5.tar.gz && mv premake5 /usr/local/bin/premake5 && rm premake5.tar.gz
 
 # otfcc
 WORKDIR /tmp
-RUN curl -sLo otfcc.tar.gz https://github.com/caryll/otfcc/archive/v0.8.4.tar.gz
-RUN tar xvf otfcc.tar.gz && mv otfcc-0.8.4 otfcc
+RUN curl -sLo otfcc.tar.gz https://github.com/caryll/otfcc/archive/v0.10.4.tar.gz
+RUN tar xvf otfcc.tar.gz && mv otfcc-0.10.4 otfcc
 WORKDIR /tmp/otfcc
 RUN premake5 gmake && cd build/gmake && make config=release_x64
 WORKDIR /tmp/otfcc/bin/release-x64
diff --git a/justfile b/justfile
index ef56e00..4f631cc 100644
--- a/justfile
+++ b/justfile
@@ -1,5 +1,5 @@
 docker-build:
-    docker build -t iosevka .
+    DOCKER_BUILDKIT=1 docker build -t iosevka .
 
 docker-run: docker-build
     sudo docker run -it --mount type=bind,source=$(pwd),dst=/Iosevka iosevka