diff --git a/.gitignore b/.gitignore
index 4a496c2..981aa21 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-SOURCES/webkitgtk-2.28.2.tar.xz
+SOURCES/webkitgtk-2.28.4.tar.xz
diff --git a/.webkit2gtk3.metadata b/.webkit2gtk3.metadata
index e611db0..092c9f9 100644
--- a/.webkit2gtk3.metadata
+++ b/.webkit2gtk3.metadata
@@ -1 +1 @@
-0aba97beba7b2677ed2d28aac51e429cb26c3fe6 SOURCES/webkitgtk-2.28.2.tar.xz
+70e9dd80647b30eaaf8a7f5b30d8869cd1254056 SOURCES/webkitgtk-2.28.4.tar.xz
diff --git a/SOURCES/fix-ppc64le-s390x.patch b/SOURCES/fix-ppc64le-s390x.patch
deleted file mode 100644
index 3171b85..0000000
--- a/SOURCES/fix-ppc64le-s390x.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-Index: /Source/JavaScriptCore/heap/GCMemoryOperations.h
-===================================================================
---- /Source/JavaScriptCore/heap/GCMemoryOperations.h	(revision 261325)
-+++ /Source/JavaScriptCore/heap/GCMemoryOperations.h	(revision 261326)
-@@ -54,5 +54,5 @@
-     };
- 
--#if COMPILER(GCC_COMPATIBLE) && USE(JSVALUE64)
-+#if COMPILER(GCC_COMPATIBLE) && (CPU(X86_64) || CPU(ARM64))
-     if (bytes <= smallCutoff)
-         slowPathForwardMemcpy();
-@@ -122,6 +122,4 @@
-             : "d0", "d1", "memory"
-         );
--#else
--    slowPathForwardMemcpy();
- #endif // CPU(X86_64)
-     } else {
-@@ -140,5 +138,5 @@
- #else
-     slowPathForwardMemcpy();
--#endif // COMPILER(GCC_COMPATIBLE)
-+#endif // COMPILER(GCC_COMPATIBLE) && (CPU(X86_64) || CPU(ARM64))
- #else
-     memcpy(dst, src, bytes);
diff --git a/SPECS/webkit2gtk3.spec b/SPECS/webkit2gtk3.spec
index 90c760e..f1ac082 100644
--- a/SPECS/webkit2gtk3.spec
+++ b/SPECS/webkit2gtk3.spec
@@ -6,8 +6,8 @@
         cp -p %1 _license_files/$(echo '%1' | sed -e 's!/!.!g')
 
 Name:           webkit2gtk3
-Version:        2.28.2
-Release:        2%{?dist}
+Version:        2.28.4
+Release:        1%{?dist}
 Summary:        GTK Web content engine library
 
 License:        LGPLv2
@@ -16,10 +16,8 @@ Source0:        http://webkitgtk.org/releases/webkitgtk-%{version}.tar.xz
 
 # https://bugs.webkit.org/show_bug.cgi?id=209360
 Patch0:         webkit-aarch64_page_size.patch
-# https://bugs.webkit.org/show_bug.cgi?id=210685
-Patch1:         fix-ppc64le-s390x.patch
 # https://bugs.webkit.org/show_bug.cgi?id=193749
-Patch2:         evolution-shared-secondary-process.patch
+Patch1:         evolution-shared-secondary-process.patch
 
 BuildRequires:  bison
 BuildRequires:  bubblewrap
@@ -207,9 +205,10 @@ pushd %{_target_platform}
 popd
 
 # Show the build time in the status
-# Use -j6 to reduce maximum memory usage (relative to default-j24).
 export NINJA_STATUS="[%f/%t][%e] "
-%ninja_build -C %{_target_platform} -j6
+# brew has run out of memory building WebKitGTK 2.28.4 with -j6, so
+# use -j3 to reduce maximum memory usage.
+%ninja_build -C %{_target_platform} -j3
 
 %install
 %ninja_install -C %{_target_platform}
@@ -282,6 +281,10 @@ export NINJA_STATUS="[%f/%t][%e] "
 %{_datadir}/gtk-doc/html/webkitdomgtk-4.0/
 
 %changelog
+* Mon Aug 03 2020 Michael Catanzaro <mcatanzaro@redhat.com> - 2.28.4-1
+- Update to 2.28.4
+- Related: #1817143
+
 * Thu May 21 2020 Michael Catanzaro <mcatanzaro@redhat.com> - 2.28.2-2
 - Related: rhbz#1817143 Properly remove webkit2gtk3-plugin-process-gtk2 package