diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1967b06..5a7ef42 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
 
     runs-on: ubuntu-latest
     container:
-      image: crystallang/crystal:0.35.1-alpine
+      image: crystallang/crystal:0.36.1-alpine
 
     steps:
     - uses: actions/checkout@v2
diff --git a/Dockerfile b/Dockerfile
index f203c6c..6e5f3d8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM crystallang/crystal:0.35.1-alpine AS builder
+FROM crystallang/crystal:0.36.1-alpine AS builder
 
 WORKDIR /Mango
 
diff --git a/Dockerfile.arm32v7 b/Dockerfile.arm32v7
index 65abb90..5a31a26 100644
--- a/Dockerfile.arm32v7
+++ b/Dockerfile.arm32v7
@@ -2,7 +2,7 @@ FROM arm32v7/ubuntu:18.04
 
 RUN apt-get update && apt-get install -y wget git make llvm-8 llvm-8-dev g++ libsqlite3-dev libyaml-dev libgc-dev libssl-dev libcrypto++-dev libevent-dev libgmp-dev zlib1g-dev libpcre++-dev pkg-config libarchive-dev libxml2-dev libacl1-dev nettle-dev liblzo2-dev liblzma-dev libbz2-dev libjpeg-turbo8-dev libpng-dev libtiff-dev
 
-RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 0.35.1 && make deps && cd ..
+RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 0.36.1 && 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 && git checkout v0.2.0 && make && cd ..
diff --git a/Dockerfile.arm64v8 b/Dockerfile.arm64v8
index d9b4186..3cd5939 100644
--- a/Dockerfile.arm64v8
+++ b/Dockerfile.arm64v8
@@ -2,7 +2,7 @@ FROM arm64v8/ubuntu:18.04
 
 RUN apt-get update && apt-get install -y wget git make llvm-8 llvm-8-dev g++ libsqlite3-dev libyaml-dev libgc-dev libssl-dev libcrypto++-dev libevent-dev libgmp-dev zlib1g-dev libpcre++-dev pkg-config libarchive-dev libxml2-dev libacl1-dev nettle-dev liblzo2-dev liblzma-dev libbz2-dev libjpeg-turbo8-dev libpng-dev libtiff-dev
 
-RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 0.35.1 && make deps && cd ..
+RUN git clone https://github.com/crystal-lang/crystal && cd crystal && git checkout 0.36.1 && 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 && git checkout v0.2.0 && make && cd ..
diff --git a/shard.lock b/shard.lock
index 254f3a5..6e43421 100644
--- a/shard.lock
+++ b/shard.lock
@@ -30,7 +30,7 @@ shards:
 
   http_proxy:
     git: https://github.com/mamantoha/http_proxy.git
-    version: 0.7.1
+    version: 0.8.0
 
   image_size:
     git: https://github.com/hkalexling/image_size.cr.git
@@ -42,7 +42,7 @@ shards:
 
   kemal-session:
     git: https://github.com/kemalcr/kemal-session.git
-    version: 0.12.1
+    version: 0.13.0
 
   kilt:
     git: https://github.com/jeromegn/kilt.git
diff --git a/shard.yml b/shard.yml
index 390ddc6..3ed69c7 100644
--- a/shard.yml
+++ b/shard.yml
@@ -8,7 +8,7 @@ targets:
   mango:
     main: src/mango.cr
 
-crystal: 0.35.1
+crystal: 0.36.1
 
 license: MIT