diff --git a/src/Core/FlatpakBackend.vala b/src/Core/FlatpakBackend.vala
index 989315053..10f2baab4 100644
--- a/src/Core/FlatpakBackend.vala
+++ b/src/Core/FlatpakBackend.vala
@@ -400,8 +400,13 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
 
         var category_array = new GLib.GenericArray<AppStream.Category> ();
         category_array.add (category);
+#if HAS_APPSTREAM_1_0
+        AppStream.utils_sort_components_into_categories (user_appstream_pool.get_components ().as_array (), category_array, false);
+        AppStream.utils_sort_components_into_categories (system_appstream_pool.get_components ().as_array (), category_array, false);
+#else
         AppStream.utils_sort_components_into_categories (user_appstream_pool.get_components (), category_array, false);
         AppStream.utils_sort_components_into_categories (system_appstream_pool.get_components (), category_array, false);
+#endif
         components = category.get_components ();
 
         var apps = new Gee.TreeSet<AppCenterCore.Package> ();
@@ -417,13 +422,21 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
         var apps = new Gee.TreeSet<AppCenterCore.Package> ();
         var comps = user_appstream_pool.search (query);
         if (category == null) {
+#if HAS_APPSTREAM_1_0
+            comps.as_array ().foreach ((comp) => {
+#else
             comps.foreach ((comp) => {
+#endif
                 var packages = get_packages_for_component_id (comp.get_id ());
                 apps.add_all (packages);
             });
         } else {
             var cat_packages = get_applications_for_category (category);
+#if HAS_APPSTREAM_1_0
+            comps.as_array ().foreach ((comp) => {
+#else
             comps.foreach ((comp) => {
+#endif
                 var packages = get_packages_for_component_id (comp.get_id ());
                 foreach (var package in packages) {
                     if (package in cat_packages) {
@@ -435,13 +448,21 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
 
         comps = system_appstream_pool.search (query);
         if (category == null) {
+#if HAS_APPSTREAM_1_0
+            comps.as_array ().foreach ((comp) => {
+#else
             comps.foreach ((comp) => {
+#endif
                 var packages = get_packages_for_component_id (comp.get_id ());
                 apps.add_all (packages);
             });
         } else {
             var cat_packages = get_applications_for_category (category);
+#if HAS_APPSTREAM_1_0
+            comps.as_array ().foreach ((comp) => {
+#else
             comps.foreach ((comp) => {
+#endif
                 var packages = get_packages_for_component_id (comp.get_id ());
                 foreach (var package in packages) {
                     if (package in cat_packages) {
@@ -510,7 +531,11 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
                 continue;
             }
 
+#if HAS_APPSTREAM_1_0
+            if (package.component.get_developer ().get_name () == author) {
+#else
             if (package.component.developer_name == author) {
+#endif
                 package_ids.add (package.component.id);
 
                 AppCenterCore.Package? user_package = null;
@@ -1095,7 +1120,11 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
             warning ("Errors found in flatpak appdata, some components may be incomplete/missing: %s", e.message);
         } finally {
             var comp_validator = ComponentValidator.get_default ();
+#if HAS_APPSTREAM_1_0
+            user_appstream_pool.get_components ().as_array ().foreach ((comp) => {
+#else
             user_appstream_pool.get_components ().foreach ((comp) => {
+#endif
                 if (!comp_validator.validate (comp)) {
                     return;
                 }
@@ -1133,7 +1162,11 @@ public class AppCenterCore.FlatpakBackend : Backend, Object {
             warning ("Errors found in flatpak appdata, some components may be incomplete/missing: %s", e.message);
         } finally {
             var comp_validator = ComponentValidator.get_default ();
+#if HAS_APPSTREAM_1_0
+            system_appstream_pool.get_components ().as_array ().foreach ((comp) => {
+#else
             system_appstream_pool.get_components ().foreach ((comp) => {
+#endif
                 if (!comp_validator.validate (comp)) {
                     return;
                 }
diff --git a/src/Core/Package.vala b/src/Core/Package.vala
index 0f9a90c49..ed1412926 100644
--- a/src/Core/Package.vala
+++ b/src/Core/Package.vala
@@ -306,7 +306,11 @@ public class AppCenterCore.Package : Object {
                 return _author;
             }
 
+#if HAS_APPSTREAM_1_0
+            _author = component.get_developer ().get_name ();
+#else
             _author = component.developer_name;
+#endif
 
             if (_author == null) {
                 var project_group = component.project_group;
@@ -677,7 +681,11 @@ public class AppCenterCore.Package : Object {
             }
 
             try {
+#if HAS_APPSTREAM_1_0
+                description = AppStream.markup_convert (description, TEXT);
+#else
                 description = AppStream.markup_convert_simple (description);
+#endif
             } catch (Error e) {
                 warning ("Failed to convert description to markup: %s", e.message);
             }
@@ -919,7 +927,11 @@ public class AppCenterCore.Package : Object {
     }
 
     public AppStream.Release? get_newest_release () {
+#if HAS_APPSTREAM_1_0
+        var releases = component.get_releases_plain ().get_entries ();
+#else
         var releases = component.get_releases ();
+#endif
         releases.sort_with_data ((a, b) => {
             if (a.get_version () == null || b.get_version () == null) {
                 if (a.get_version () != null) {
diff --git a/src/Core/PackageKitBackend.vala b/src/Core/PackageKitBackend.vala
index 09da40741..a108831ef 100644
--- a/src/Core/PackageKitBackend.vala
+++ b/src/Core/PackageKitBackend.vala
@@ -275,7 +275,11 @@ public class AppCenterCore.PackageKitBackend : Backend, Object {
         } finally {
             var new_package_list = new Gee.HashMap<string, Package> ();
             var comp_validator = ComponentValidator.get_default ();
+#if HAS_APPSTREAM_1_0
+            appstream_pool.get_components ().as_array ().foreach ((comp) => {
+#else
             appstream_pool.get_components ().foreach ((comp) => {
+#endif
                 if (!comp_validator.validate (comp)) {
                     return;
                 }
@@ -317,7 +321,12 @@ public class AppCenterCore.PackageKitBackend : Backend, Object {
             component.set_id (id);
             component.set_origin (Package.APPCENTER_PACKAGE_ORIGIN);
 
-#if HAS_APPSTREAM_0_15
+#if HAS_APPSTREAM_1_0
+            var components = new AppStream.ComponentBox (AppStream.ComponentBoxFlags.NONE);
+            components.add (component);
+
+            appstream_pool.add_components (components);
+#elif HAS_APPSTREAM_0_15
             var components = new GenericArray<AppStream.Component> ();
             components.add (component);
 
@@ -430,7 +439,11 @@ public class AppCenterCore.PackageKitBackend : Backend, Object {
                 break;
             }
 
+#if HAS_APPSTREAM_1_0
+            if (package.component.get_developer ().get_name () == author) {
+#else
             if (package.component.developer_name == author) {
+#endif
                 packages.add (package);
             }
         }
@@ -447,7 +460,11 @@ public class AppCenterCore.PackageKitBackend : Backend, Object {
 
         var category_array = new GLib.GenericArray<AppStream.Category> ();
         category_array.add (category);
+#if HAS_APPSTREAM_1_0
+        AppStream.utils_sort_components_into_categories (appstream_pool.get_components ().as_array (), category_array, true);
+#else
         AppStream.utils_sort_components_into_categories (appstream_pool.get_components (), category_array, true);
+#endif
         components = category.get_components ();
 
         var apps = new Gee.TreeSet<AppCenterCore.Package> ();
@@ -465,7 +482,11 @@ public class AppCenterCore.PackageKitBackend : Backend, Object {
         var apps = new Gee.TreeSet<AppCenterCore.Package> ();
         var comps = appstream_pool.search (query);
         if (category == null) {
+#if HAS_APPSTREAM_1_0
+            comps.as_array ().foreach ((comp) => {
+#else
             comps.foreach ((comp) => {
+#endif
                 var package = get_package_for_component_id (comp.get_id ());
                 if (package != null) {
                     apps.add (package);
@@ -473,7 +494,11 @@ public class AppCenterCore.PackageKitBackend : Backend, Object {
             });
         } else {
             var cat_packages = get_applications_for_category (category);
+#if HAS_APPSTREAM_1_0
+            comps.as_array ().foreach ((comp) => {
+#else
             comps.foreach ((comp) => {
+#endif
                 var package = get_package_for_component_id (comp.get_id ());
                 if (package != null && package in cat_packages) {
                     apps.add (package);
diff --git a/src/Views/AppInfoView.vala b/src/Views/AppInfoView.vala
index 5a3a361af..bef37f0ec 100644
--- a/src/Views/AppInfoView.vala
+++ b/src/Views/AppInfoView.vala
@@ -310,8 +310,16 @@ public class AppCenter.Views.AppInfoView : AppCenter.AbstractAppContainer {
                 oars_flowbox.add (uncurated);
             }
 #endif
+
+#if HAS_APPSTREAM_1_0
+            var active_locale = "en-US";
+            if (package_component.get_context () != null) {
+                active_locale = package_component.get_context ().get_locale () ?? "en-US";
+            }
+#else
             var active_locale = package_component.get_active_locale ();
-            if (active_locale != "en_US") {
+#endif
+            if (active_locale != "en_US" && active_locale != "en-US") {
                 var percent_translated = package_component.get_language (
                     // Expects language without locale
                     active_locale.split ("_")[0]
@@ -492,7 +500,11 @@ public class AppCenter.Views.AppInfoView : AppCenter.AbstractAppContainer {
             }
         }
 
+#if HAS_APPSTREAM_1_0
+        screenshots = package_component.get_screenshots_all ();
+#else
         screenshots = package_component.get_screenshots ();
+#endif
 
         if (screenshots.length > 0) {
             screenshot_carousel = new Hdy.Carousel () {
@@ -1030,7 +1042,11 @@ public class AppCenter.Views.AppInfoView : AppCenter.AbstractAppContainer {
             get_app_download_size.begin ();
 
             Idle.add (() => {
+#if HAS_APPSTREAM_1_0
+                var releases = package.component.get_releases_plain ().get_entries ();
+#else
                 var releases = package.component.get_releases ();
+#endif
 
                 foreach (unowned var release in releases) {
                     if (release.get_version () == null) {
@@ -1049,7 +1065,11 @@ public class AppCenter.Views.AppInfoView : AppCenter.AbstractAppContainer {
 
                         release_carousel.add (release_row);
 
+#if HAS_APPSTREAM_1_0
+                        if (package.installed && AppStream.vercmp_simple (release.get_version (), package.get_version ()) <= 0) {
+#else
                         if (package.installed && AppStream.utils_compare_versions (release.get_version (), package.get_version ()) <= 0) {
+#endif
                             break;
                         }
                     }
diff --git a/src/Widgets/ReleaseRow.vala b/src/Widgets/ReleaseRow.vala
index 3b4879142..36fcbc766 100644
--- a/src/Widgets/ReleaseRow.vala
+++ b/src/Widgets/ReleaseRow.vala
@@ -116,7 +116,11 @@ public class AppCenter.Widgets.ReleaseRow : Gtk.Box {
     private string format_release_description (string? description ) {
         if (description != null) {
             try {
+#if HAS_APPSTREAM_1_0
+                var markup = AppStream.markup_convert (description, TEXT);
+#else
                 var markup = AppStream.markup_convert_simple (description);
+#endif
 
                 if (markup.strip () != "") {
                     return markup;
diff --git a/src/meson.build b/src/meson.build
index d3d558eff..df69a0bfe 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -78,6 +78,10 @@ if appstream.version().version_compare('>=0.16')
     args += '--define=HAS_APPSTREAM_0_16'
 endif
 
+if appstream.version().version_compare('>=1.0')
+    args += '--define=HAS_APPSTREAM_1_0'
+endif
+
 if get_option('packagekit_backend')
     appcenter_files += files(
         'Core/PackageKitBackend.vala',