diff --git a/.goreleaser.yml b/.goreleaser.yml
index 76fd751..18f4232 100644
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -71,6 +71,8 @@ brews:
     install: |
       libexec.install Dir["*"]
       bin.write_exec_script "#{libexec}/tart.app/Contents/MacOS/tart"
-      generate_completions_from_executable(libexec/"tart.app/Contents/MacOS/tart", "--generate-completion-script")
     custom_block: |
       depends_on :macos => :ventura
+      def post_install
+        generate_completions_from_executable(libexec/"tart.app/Contents/MacOS/tart", "--generate-completion-script")
+      end
diff --git a/Tests/TartTests/LayerizerTests.swift b/Tests/TartTests/LayerizerTests.swift
index 7ee3f54..ca22abd 100644
--- a/Tests/TartTests/LayerizerTests.swift
+++ b/Tests/TartTests/LayerizerTests.swift
@@ -14,7 +14,7 @@ final class LayerizerTests: XCTestCase {
     do {
       registryRunner = try await RegistryRunner()
     } catch {
-      try XCTSkipIf(ProcessInfo.processInfo.environment["CI"] == nil)
+      try XCTSkip("Registry is unavailable: \(error)")
     }
   }
 
@@ -26,7 +26,7 @@ final class LayerizerTests: XCTestCase {
 
   func testDiskV2() async throws {
     // Original disk file to be pushed to the registry
-    let originalDiskFileURL = try fileWithRandomData(sizeBytes: 5 * 1024 * 1024 * 1024)
+    let originalDiskFileURL = try fileWithRandomData(sizeBytes: 1 * 1024 * 1024 * 1024)
     addTeardownBlock {
       try FileManager.default.removeItem(at: originalDiskFileURL)
     }
diff --git a/Tests/TartTests/RegistryTests.swift b/Tests/TartTests/RegistryTests.swift
index dad02ed..b66bb6b 100644
--- a/Tests/TartTests/RegistryTests.swift
+++ b/Tests/TartTests/RegistryTests.swift
@@ -10,7 +10,7 @@ final class RegistryTests: XCTestCase {
     do {
       registryRunner = try await RegistryRunner()
     } catch {
-      try XCTSkipIf(ProcessInfo.processInfo.environment["CI"] == nil)
+      try XCTSkip("Registry is unavailable: \(error)")
     }
   }