diff --git a/definitions/schema.go b/definitions/schema.go
index ed96b56..08d342b 100644
--- a/definitions/schema.go
+++ b/definitions/schema.go
@@ -56,13 +56,14 @@ type Extract struct {
 }
 
 type Arg struct {
-	Position       int    `yaml:"position"`
-	Required       bool   `yaml:"required"`
-	Validate       string `yaml:"validate,omitempty"`
-	Flag           string `yaml:"flag,omitempty"`
-	Suffix         string `yaml:"suffix,omitempty"`          // append user value with this prefix, e.g. "@" for pkg@version
-	FixedSuffix    string `yaml:"fixed_suffix,omitempty"`    // always append this suffix, e.g. "@none" for go remove
-	ExtractionOnly bool   `yaml:"extraction_only,omitempty"` // arg is only used for output extraction, not passed to command
+	Position             int    `yaml:"position"`
+	Required             bool   `yaml:"required"`
+	Validate             string `yaml:"validate,omitempty"`
+	Flag                 string `yaml:"flag,omitempty"`
+	Suffix               string `yaml:"suffix,omitempty"`                   // append user value with this prefix, e.g. "@" for pkg@version
+	FixedSuffix          string `yaml:"fixed_suffix,omitempty"`             // always append this suffix, e.g. "@none" for go remove
+	ExtractionOnly       bool   `yaml:"extraction_only,omitempty"`          // arg is only used for output extraction, not passed to command
+	SuppressDefaultFlags bool   `yaml:"suppresses_default_flags,omitempty"` // if this arg is passed, then we want to skip default flags
 }
 
 type Flag struct {
diff --git a/definitions/uv.yaml b/definitions/uv.yaml
index 2aadf60..fe0f203 100644
--- a/definitions/uv.yaml
+++ b/definitions/uv.yaml
@@ -106,7 +106,11 @@ commands:
   update:
     base: [sync]
     args:
-      package: {position: 0, required: false, validate: pypi_package}
+      package:
+        required: false
+        validate: pypi_package
+        flag: "--upgrade-package"
+        suppresses_default_flags: true
     flags:
       quiet: [--quiet]
     default_flags: [--upgrade]
diff --git a/translator.go b/translator.go
index cbd0449..54cfc86 100644
--- a/translator.go
+++ b/translator.go
@@ -89,6 +89,8 @@ func (t *Translator) buildCommandChain(binary string, cmd definitions.Command, i
 func (t *Translator) buildSingleCommand(binary string, cmd definitions.Command, input CommandInput) ([]string, error) {
 	args := []string{binary}
 
+	suppressDefaultFlags := false
+
 	baseOverrideUsed := t.applyBaseOverrides(&args, cmd, input)
 
 	packageVal := input.Args["package"]
@@ -103,11 +105,16 @@ func (t *Translator) buildSingleCommand(binary string, cmd definitions.Command,
 		if val == "" {
 			continue
 		}
+		if entry.argDef.SuppressDefaultFlags {
+			suppressDefaultFlags = true
+		}
 	}
 
 	t.applyVersionSuffix(&args, cmd, input, packageVal)
 
-	args = append(args, cmd.DefaultFlags...)
+	if !suppressDefaultFlags {
+		args = append(args, cmd.DefaultFlags...)
+	}
 
 	t.applyUserFlags(&args, cmd, input, baseOverrideUsed)
 
diff --git a/translator_test.go b/translator_test.go
index 3fc45e2..3477002 100644
--- a/translator_test.go
+++ b/translator_test.go
@@ -713,6 +713,20 @@ func TestUvUpdate(t *testing.T) {
 	}
 }
 
+func TestUvUpdatePackage(t *testing.T) {
+	tr := loadTranslator(t)
+	cmd, err := tr.BuildCommand("uv", "update", CommandInput{
+		Args: map[string]string{"package": "requests"},
+	})
+	if err != nil {
+		t.Fatalf("BuildCommand failed: %v", err)
+	}
+	expected := []string{"uv", "sync", "--upgrade-package", "requests"}
+	if !reflect.DeepEqual(cmd, expected) {
+		t.Errorf("got %v, want %v", cmd, expected)
+	}
+}
+
 // --- yarn tests ---
 
 func TestYarnInstall(t *testing.T) {