diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 81c1610..cb9826f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,6 +34,7 @@ jobs:
       - uses: browser-actions/setup-chrome@v1
         with:
           chrome-version: stable
+          install-chromedriver: true
         if: matrix.os == 'windows-latest'
       - uses: crystal-lang/install-crystal@v1
         with:
@@ -58,7 +59,8 @@ jobs:
       - uses: actions/checkout@v4
       - uses: browser-actions/setup-chrome@v1
         with:
-          chrome-version: beta
+          chrome-version: stable
+          install-chromedriver: true
         if: matrix.os == 'windows-latest'
       - uses: crystal-lang/install-crystal@v1
         with:
diff --git a/Dockerfile b/Dockerfile
index d6b78c5..9e0dbb0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM crystallang/crystal:1.10.0
+FROM crystallang/crystal:1.14.1
 WORKDIR /data
 EXPOSE 3002
 
@@ -7,7 +7,7 @@ RUN apt-get update \
     libnss3 \
     libgconf-2-4 \
     chromium-browser \
-    firefox-geckodriver \
+    firefox \
   && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 COPY . /data
diff --git a/docker-compose.yml b/docker-compose.yml
index dcc921e..62faa36 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: "3"
-
 services:
   app:
     build:
diff --git a/script/setup b/script/setup
index bec0049..1e3dfc1 100755
--- a/script/setup
+++ b/script/setup
@@ -4,14 +4,11 @@
 set -e
 set -o pipefail
 
-if command -v docker-compose > /dev/null; then
-  docker-compose build
-  docker-compose run app shards install
-elif command -v docker compose > /dev/null; then
+if command -v docker compose > /dev/null; then
   docker compose build
   docker compose run app shards install
 else
-  printf 'Docker and/or docker-compose are not installed.\n'
+  printf 'Command docker compose does not exist. Install Docker.\n'
   printf 'See https://docs.docker.com/compose/install/ for install instructions.\n'
   exit 1
 fi
diff --git a/script/test b/script/test
index f6ddfce..5150c77 100755
--- a/script/test
+++ b/script/test
@@ -4,9 +4,7 @@
 set -e
 set -o pipefail
 
-if command -v docker-compose > /dev/null; then
-  COMPOSE="docker-compose run app"
-elif command -v docker compose > /dev/null; then
+if command -v docker compose > /dev/null; then
   COMPOSE="docker compose run app"
 fi
 
diff --git a/shard.yml b/shard.yml
index 31e24ed..f1f7d54 100644
--- a/shard.yml
+++ b/shard.yml
@@ -20,7 +20,7 @@ dependencies:
     version: ">= 0.4.7, < 0.5"
   webless:
     github: crystal-loot/webless
-    version: ">= 0.1.0, < 0.2"
+    version: ">= 0.2.0, < 0.3"
   html5:
     github: naqvis/crystal-html5
     version: ">= 0.5.0, < 0.6"
diff --git a/spec/lucky_flow_spec.cr b/spec/lucky_flow_spec.cr
index 9d6866e..c50e36e 100644
--- a/spec/lucky_flow_spec.cr
+++ b/spec/lucky_flow_spec.cr
@@ -494,12 +494,12 @@ private class FakeProcess
   class_property command : String?
   class_property shell : Bool?
 
-  def initialize(command, shell)
+  def initialize(command : String?, shell : Bool?)
     @@command = command
     @@shell = shell
   end
 
-  def self.find_executable(string)
+  def self.find_executable(string : String)
     "/fake_path_to_executable"
   end
 end
diff --git a/spec/support/test_handler.cr b/spec/support/test_handler.cr
index 9359cf5..c2a4894 100644
--- a/spec/support/test_handler.cr
+++ b/spec/support/test_handler.cr
@@ -6,9 +6,10 @@ class TestHandler
     if context.request.resource == "/favicon.ico"
       context.response.print ""
     else
-      handler = routes[context.request.resource]
-      context.response.content_type = "text/html"
-      context.response.print handler.call(context)
+      if handler = routes[context.request.resource]?
+        context.response.content_type = "text/html"
+        context.response.print handler.call(context)
+      end
     end
   end
 
diff --git a/src/ext/avram.cr b/src/ext/avram.cr
index 757fcc1..d7e8160 100644
--- a/src/ext/avram.cr
+++ b/src/ext/avram.cr
@@ -12,7 +12,7 @@ module AvramLuckyFlowHelpers
   # ```
   def fill_form(
     form : Avram::SaveOperation.class | Avram::Operation.class,
-    **fields_and_values
+    **fields_and_values,
   )
     fields_and_values.each do |name, value|
       element = field("#{form.param_key}:#{name}")
diff --git a/src/lucky_flow.cr b/src/lucky_flow.cr
index c3cc8bd..39a3cb4 100644
--- a/src/lucky_flow.cr
+++ b/src/lucky_flow.cr
@@ -49,7 +49,7 @@ class LuckyFlow
     driver.visit("#{settings.base_uri}#{path}")
   end
 
-  def open_screenshot(process = Process, time = Time.utc, fullsize = false) : Void
+  def open_screenshot(process = Process, time = Time.utc, fullsize = false) : Nil
     filename = generate_screenshot_filename(time)
     take_screenshot(filename, fullsize)
     process.new(command: "#{open_command(process)} #{filename}", shell: true)
diff --git a/src/lucky_flow/error_message_when_not_found.cr b/src/lucky_flow/error_message_when_not_found.cr
index 37e1257..288660e 100644
--- a/src/lucky_flow/error_message_when_not_found.cr
+++ b/src/lucky_flow/error_message_when_not_found.cr
@@ -11,7 +11,7 @@ class LuckyFlow::ErrorMessageWhenNotFound
     @driver : LuckyFlow::Driver,
     @selector : String,
     @inner_text : String?,
-    @negate : Bool = false
+    @negate : Bool = false,
   )
   end
 
diff --git a/src/lucky_flow/find_element.cr b/src/lucky_flow/find_element.cr
index e847a5e..94347c9 100644
--- a/src/lucky_flow/find_element.cr
+++ b/src/lucky_flow/find_element.cr
@@ -19,7 +19,7 @@ class LuckyFlow::FindElement
       return matching_elements.first if matching_elements.first?
 
       break unless has_retries_left?
-      sleep retry_delay_in_ms
+      sleep retry_delay_in_ms.milliseconds
     end
 
     raise_element_not_found_error
@@ -33,8 +33,8 @@ class LuckyFlow::FindElement
     (settings.stop_retrying_after / settings.retry_delay).to_i
   end
 
-  private def retry_delay_in_ms : Float
-    settings.retry_delay.total_milliseconds / 1_000
+  private def retry_delay_in_ms : Float64
+    settings.retry_delay.total_milliseconds
   end
 
   private def settings
diff --git a/src/lucky_flow/selenium/driver.cr b/src/lucky_flow/selenium/driver.cr
index 720395b..03cce99 100644
--- a/src/lucky_flow/selenium/driver.cr
+++ b/src/lucky_flow/selenium/driver.cr
@@ -9,7 +9,7 @@ abstract class LuckyFlow::Selenium::Driver < LuckyFlow::Driver
   end
 
   def screenshot(path : String)
-    FileUtils.mkdir_p(File.dirname(path))
+    Dir.mkdir_p(File.dirname(path))
     session.screenshot(path)
   end
 
@@ -89,7 +89,7 @@ abstract class LuckyFlow::Selenium::Driver < LuckyFlow::Driver
 
   private def retry_start_session(e)
     if Time.utc <= @retry_limit
-      sleep(0.1)
+      sleep(100.milliseconds)
       start_session
     else
       raise e
@@ -98,7 +98,7 @@ abstract class LuckyFlow::Selenium::Driver < LuckyFlow::Driver
 
   private def find_elements(
     strategy : Symbol,
-    query : String
+    query : String,
   ) : Array(LuckyFlow::Element)
     session.find_elements(strategy, query).map do |element|
       LuckyFlow::Selenium::Element