diff --git a/.crystal-version b/.crystal-version
index 6085e94..bc80560 100644
--- a/.crystal-version
+++ b/.crystal-version
@@ -1 +1 @@
-1.2.1
+1.5.0
diff --git a/.tool-versions b/.tool-versions
index ef5bc42..d933386 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
 nodejs 12.14.1
-crystal 1.2.1
+crystal 1.5.0
diff --git a/CHANGELOG b/CHANGELOG
index 7e45009..aa1d1ce 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,7 @@
 
 * Fix source code link
 * Upgrade to Lucky 0.30.1
+* Upgrade to Crystal 1.5.0
 
 2022-05-21
 
diff --git a/Dockerfile b/Dockerfile
index 17ebb9b..cc2e430 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ COPY webpack.mix.js .
 COPY src ./src
 RUN yarn prod
 
-FROM crystallang/crystal:1.2.1-alpine as lucky_build
+FROM crystallang/crystal:1.5-alpine as lucky_build
 ENV SKIP_LUCKY_TASK_PRECOMPILATION="1"
 RUN apk add yaml-static
 WORKDIR /tmp_build
diff --git a/shard.yml b/shard.yml
index 819eaee..24bbe56 100644
--- a/shard.yml
+++ b/shard.yml
@@ -8,7 +8,7 @@ targets:
   scribe:
     main: src/scribe.cr
 
-crystal: 1.2.1
+crystal: 1.5.0
 
 dependencies:
   lucky: