diff --git a/lib/go/thrift/header_context.go b/lib/go/thrift/header_context.go
index 21e880d..ac9bd48 100644
--- a/lib/go/thrift/header_context.go
+++ b/lib/go/thrift/header_context.go
@@ -44,6 +44,15 @@
 	)
 }
 
+// UnsetHeader unsets a previously set header in the context.
+func UnsetHeader(ctx context.Context, key string) context.Context {
+	return context.WithValue(
+		ctx,
+		headerKey(key),
+		nil,
+	)
+}
+
 // GetHeader returns a value of the given header from the context.
 func GetHeader(ctx context.Context, key string) (value string, ok bool) {
 	if v := ctx.Value(headerKey(key)); v != nil {
diff --git a/lib/go/thrift/header_context_test.go b/lib/go/thrift/header_context_test.go
index a1ea2d0..16b10c8 100644
--- a/lib/go/thrift/header_context_test.go
+++ b/lib/go/thrift/header_context_test.go
@@ -25,7 +25,7 @@
 	"testing"
 )
 
-func TestSetGetHeader(t *testing.T) {
+func TestSetGetUnsetHeader(t *testing.T) {
 	const (
 		key   = "foo"
 		value = "bar"
@@ -68,6 +68,17 @@
 			}
 		},
 	)
+
+	t.Run(
+		"Unset",
+		func(t *testing.T) {
+			ctx := UnsetHeader(ctx, key)
+
+			if _, ok := GetHeader(ctx, key); ok {
+				t.Errorf("GetHeader returned ok on unset key %q", key)
+			}
+		},
+	)
 }
 
 func TestReadKeyList(t *testing.T) {