diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a43182c90..170cf1fe6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,22 +7,22 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - ruby: 3.2
+          - ruby: 3.3
+            gemfile: gemfiles/activerecord71.gemfile
+            postgres: 16
+          - ruby: 3.3
             gemfile: gemfiles/activerecord71.gemfile
             postgres: 15
-          - ruby: 3.1
-            gemfile: Gemfile
+          - ruby: 3.3
+            gemfile: gemfiles/activerecord71.gemfile
             postgres: 14
-          - ruby: "3.0"
-            gemfile: gemfiles/activerecord61.gemfile
-            postgres: 12
-          - ruby: 2.7
-            gemfile: gemfiles/activerecord60.gemfile
-            postgres: 10
+          - ruby: 3.3
+            gemfile: gemfiles/activerecord71.gemfile
+            postgres: 13
     env:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2daba879b..02398055d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 3.3.4 (2023-09-05)
+
+- Fixed support for aliases in config file
+
 ## 3.3.3 (2023-04-18)
 
 - Fixed error with system stats for Azure Database
diff --git a/lib/pghero.rb b/lib/pghero.rb
index d2f4ba0e0..40affdbeb 100644
--- a/lib/pghero.rb
+++ b/lib/pghero.rb
@@ -121,7 +121,7 @@ def file_config
 
         config_file_exists = File.exist?(path)
 
-        config = YAML.safe_load(ERB.new(File.read(path)).result) if config_file_exists
+        config = YAML.safe_load(ERB.new(File.read(path)).result, aliases: true) if config_file_exists
         config ||= {}
 
         @file_config =
@@ -151,7 +151,7 @@ def default_config
 
       if databases.empty?
         databases["primary"] = {
-          "url" => ENV["PGHERO_DATABASE_URL"] || connection_config(ActiveRecord::Base)
+          "url" => ENV["PGHERO_DATABASE_URL"] || default_connection_config
         }
       end
 
@@ -168,6 +168,11 @@ def default_config
       }
     end
 
+    # private
+    def default_connection_config
+      connection_config(ActiveRecord::Base) if ActiveRecord::VERSION::STRING.to_f < 7.1
+    end
+
     # ensure we only have one copy of databases
     # so there's only one connection pool per database
     def databases
diff --git a/lib/pghero/version.rb b/lib/pghero/version.rb
index 6a476f46d..b23d29be7 100644
--- a/lib/pghero/version.rb
+++ b/lib/pghero/version.rb
@@ -1,3 +1,3 @@
 module PgHero
-  VERSION = "3.3.3"
+  VERSION = "3.3.4"
 end