diff --git a/Dockerfile.arm32v7 b/Dockerfile.arm32v7
index 7b560f3..7f52e48 100644
--- a/Dockerfile.arm32v7
+++ b/Dockerfile.arm32v7
@@ -5,7 +5,7 @@ RUN apt-get update && apt-get install -y wget git make llvm-8 llvm-8-dev g++ lib
 RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 0.34.0 && make deps && cd ..
 RUN git clone https://github.com/kostya/myhtml && cd myhtml/src/ext && git checkout v1.5.0 && make && cd ..
 RUN git clone https://github.com/jessedoyle/duktape.cr && cd duktape.cr/ext && git checkout v0.20.0 && make && cd ..
-RUN git clone https://github.com/hkalexling/image_size.cr && cd image_size.cr/ext/libwebp && git checkout v0.1.1 && make && cd ../stbi && make
+RUN git clone https://github.com/hkalexling/image_size.cr && cd image_size.cr && git checkout v0.2.0 && make && cd ..
 
 COPY mango-arm32v7.o .
 
diff --git a/Dockerfile.arm64v8 b/Dockerfile.arm64v8
index a535c9e..c900b21 100644
--- a/Dockerfile.arm64v8
+++ b/Dockerfile.arm64v8
@@ -5,7 +5,7 @@ RUN apt-get update && apt-get install -y wget git make llvm-8 llvm-8-dev g++ lib
 RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 0.34.0 && make deps && cd ..
 RUN git clone https://github.com/kostya/myhtml && cd myhtml/src/ext && git checkout v1.5.0 && make && cd ..
 RUN git clone https://github.com/jessedoyle/duktape.cr && cd duktape.cr/ext && git checkout v0.20.0 && make && cd ..
-RUN git clone https://github.com/hkalexling/image_size.cr && cd image_size.cr/ext/libwebp && git checkout v0.1.1 && make && cd ../stbi && make
+RUN git clone https://github.com/hkalexling/image_size.cr && cd image_size.cr && git checkout v0.2.0 && make && cd ..
 
 COPY mango-arm64v8.o .
 
diff --git a/shard.lock b/shard.lock
index 3476d56..529edf5 100644
--- a/shard.lock
+++ b/shard.lock
@@ -34,7 +34,7 @@ shards:
 
   image_size:
     github: hkalexling/image_size.cr
-    version: 0.1.1
+    version: 0.2.0
 
   kemal:
     github: kemalcr/kemal