diff --git a/Library/Homebrew/test/compiler_selector_spec.rb b/Library/Homebrew/test/compiler_selector_spec.rb
index afedc9d8b1..f1b4120fb3 100644
--- a/Library/Homebrew/test/compiler_selector_spec.rb
+++ b/Library/Homebrew/test/compiler_selector_spec.rb
@@ -10,12 +10,7 @@ describe CompilerSelector do
   let(:compilers) { [:clang, :gnu] }
   let(:software_spec) { SoftwareSpec.new }
   let(:cc) { :clang }
-  let(:versions) do
-    double(
-      llvm_build_version:  Version::NULL,
-      clang_build_version: Version.create("600"),
-    )
-  end
+  let(:versions) { class_double(DevelopmentTools, clang_build_version: Version.create("600")) }
 
   before do
     allow(versions).to receive(:gcc_version) do |name|
@@ -46,13 +41,15 @@ describe CompilerSelector do
 
     it "returns gcc-6 if gcc formula offers gcc-6 on mac", :needs_macos do
       software_spec.fails_with(:clang)
-      allow(Formulary).to receive(:factory).with("gcc").and_return(double(version: Version.new("6.0")))
+      allow(Formulary).to receive(:factory).with("gcc")
+        .and_return(instance_double(Formula, version: Version.new("6.0")))
       expect(selector.compiler).to eq("gcc-6")
     end
 
     it "returns gcc-5 if gcc formula offers gcc-5 on linux", :needs_linux do
       software_spec.fails_with(:clang)
-      allow(Formulary).to receive(:factory).with("gcc@11").and_return(double(version: Version.new("5.0")))
+      allow(Formulary).to receive(:factory).with("gcc@11")
+        .and_return(instance_double(Formula, version: Version.new("5.0")))
       expect(selector.compiler).to eq("gcc-5")
     end
 
@@ -60,14 +57,16 @@ describe CompilerSelector do
       software_spec.fails_with(:clang)
       software_spec.fails_with(gcc: "5")
       software_spec.fails_with(gcc: "7")
-      allow(Formulary).to receive(:factory).with("gcc@11").and_return(double(version: Version.new("5.0")))
+      allow(Formulary).to receive(:factory).with("gcc@11")
+        .and_return(instance_double(Formula, version: Version.new("5.0")))
       expect(selector.compiler).to eq("gcc-6")
     end
 
     it "returns gcc-7 if gcc formula offers gcc-5 and fails with gcc <= 6 on linux", :needs_linux do
       software_spec.fails_with(:clang)
       software_spec.fails_with(:gcc) { version "6" }
-      allow(Formulary).to receive(:factory).with("gcc@11").and_return(double(version: Version.new("5.0")))
+      allow(Formulary).to receive(:factory).with("gcc@11")
+        .and_return(instance_double(Formula, version: Version.new("5.0")))
       expect(selector.compiler).to eq("gcc-7")
     end