diff --git a/internal/task/selection.go b/internal/task/selection.go
index d73e2fb60fb7..994db047fd2d 100644
--- a/internal/task/selection.go
+++ b/internal/task/selection.go
@@ -128,7 +128,7 @@ func selectByExpressions(ts tasks, nodes Expressions) (tasks, Selection) {
 
 		switch node.Operation {
 		case SetOperation:
-			finalSet = newSet(selectedTasks...)
+			finalSet.Add(selectedTasks...)
 		case AddOperation, "":
 			addSet.Add(selectedTasks...)
 		case RemoveOperation:
diff --git a/internal/task/selection_test.go b/internal/task/selection_test.go
index c5801668cd03..8e6f711d6c73 100644
--- a/internal/task/selection_test.go
+++ b/internal/task/selection_test.go
@@ -35,7 +35,7 @@ func createDummyTasks() tasks {
 		dummyTask("conan-info-cataloger", "installed", "image", "language", "cpp", "conan"),
 		dummyTask("javascript-package-cataloger", "installed", "image", "language", "javascript", "node"),
 		dummyTask("php-composer-installed-cataloger", "installed", "image", "language", "php", "composer"),
-		dummyTask("ruby-installed-gemspec-cataloger", "installed", "image", "language", "ruby", "gem"),
+		dummyTask("ruby-installed-gemspec-cataloger", "installed", "image", "language", "ruby", "gem", "gemspec"),
 		dummyTask("rust-cargo-lock-cataloger", "installed", "image", "language", "rust", "binary"),
 
 		// language-specific package declared catalogers
@@ -380,6 +380,39 @@ func TestSelect(t *testing.T) {
 				Selection: []string{},
 			},
 		},
+		{
+			name:     "set default with multiple tags",
+			allTasks: createDummyTasks(),
+			basis: []string{
+				"gemspec",
+				"python",
+			},
+			expressions: []string{},
+			wantNames: []string{
+				"ruby-installed-gemspec-cataloger",
+				"python-installed-package-cataloger",
+			},
+			wantTokens: map[string]TokenSelection{
+				"ruby-installed-gemspec-cataloger":   newTokenSelection([]string{"gemspec"}, nil),
+				"python-installed-package-cataloger": newTokenSelection([]string{"python"}, nil),
+			},
+			wantRequest: SelectionRequest{
+				Expressions: []Expression{
+					{
+						Operation: SetOperation,
+						Operand:   "gemspec",
+						Errors:    nil,
+					},
+					{
+						Operation: SetOperation,
+						Operand:   "python",
+						Errors:    nil,
+					},
+				},
+				Default:   []string{"gemspec", "python"},
+				Selection: []string{},
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
diff --git a/test/cli/packages_cmd_test.go b/test/cli/packages_cmd_test.go
index 5763ff470a3f..ac3160be35bc 100644
--- a/test/cli/packages_cmd_test.go
+++ b/test/cli/packages_cmd_test.go
@@ -234,14 +234,50 @@ func TestPackagesCmdFlags(t *testing.T) {
 			},
 		},
 		{
-			name: "catalogers-option",
-			// This will detect enable python-package-cataloger, python-installed-package-cataloger and ruby-gemspec-cataloger cataloger
+			name: "legacy-catalogers-option",
+			// This will detect enable:
+			// - python-installed-package-cataloger
+			// - python-package-cataloger
+			// - ruby-gemspec-cataloger
+			// - ruby-installed-gemspec-cataloger
 			args: []string{"packages", "-o", "json", "--catalogers", "python,gemspec", coverageImage},
 			assertions: []traitAssertion{
+				assertInOutput("Flag --catalogers has been deprecated, use: override-default-catalogers and select-catalogers"),
 				assertPackageCount(13),
 				assertSuccessfulReturnCode,
 			},
 		},
+		{
+			name: "select-catalogers-option",
+			// This will detect enable:
+			// - python-installed-package-cataloger
+			// - ruby-installed-gemspec-cataloger
+			args: []string{"packages", "-o", "json", "--select-catalogers", "python,gemspec", coverageImage},
+			assertions: []traitAssertion{
+				assertPackageCount(6),
+				assertSuccessfulReturnCode,
+			},
+		},
+		{
+			name: "override-default-catalogers-option",
+			// This will detect enable:
+			// - python-installed-package-cataloger
+			// - python-package-cataloger
+			// - ruby-gemspec-cataloger
+			// - ruby-installed-gemspec-cataloger
+			args: []string{"packages", "-o", "json", "--override-default-catalogers", "python,gemspec", coverageImage},
+			assertions: []traitAssertion{
+				assertPackageCount(13),
+				assertSuccessfulReturnCode,
+			},
+		},
+		{
+			name: "new and old cataloger options are mutually exclusive",
+			args: []string{"packages", "-o", "json", "--override-default-catalogers", "python", "--catalogers", "gemspec", coverageImage},
+			assertions: []traitAssertion{
+				assertFailingReturnCode,
+			},
+		},
 		{
 			name: "override-default-parallelism",
 			args: []string{"packages", "-vvv", "-o", "json", coverageImage},