diff --git a/app/models/config/rubocop.rb b/app/models/config/rubocop.rb
index b828c3cfa..7a9d37dec 100644
--- a/app/models/config/rubocop.rb
+++ b/app/models/config/rubocop.rb
@@ -22,6 +22,10 @@ def parse_inherit_from(config)
       end
     end
 
+    def parse(content)
+      super(ERB.new(content).result)
+    end
+
     def safe_parse(content)
       parse(content)
     rescue Psych::Exception => exception
diff --git a/spec/models/config/rubocop_spec.rb b/spec/models/config/rubocop_spec.rb
index 96e0735d1..1b38e6440 100644
--- a/spec/models/config/rubocop_spec.rb
+++ b/spec/models/config/rubocop_spec.rb
@@ -26,6 +26,24 @@
       end
     end
 
+    context "when the configuration uses pre-processing" do
+      it "runs the config through ERB" do
+        raw_config = <<~CONFIG
+          Style/Encoding:
+            Enabled: <%= 1 + 1 == 2 %>
+          <% 42 # This should be ignored and not cause an error %>
+        CONFIG
+
+        config = build_config(raw_config)
+
+        expect(config.content).to eq(
+          "Style/Encoding" => {
+            "Enabled" => true,
+          },
+        )
+      end
+    end
+
     context "when the configuration uses `inherit_from`" do
       it "returns the merged configuration using `inherit_from`" do
         repo_config = <<~EOS