diff --git a/includes/sanitizers/class-amp-meta-sanitizer.php b/includes/sanitizers/class-amp-meta-sanitizer.php
index 0a30073b14f..0ce80da2b9e 100644
--- a/includes/sanitizers/class-amp-meta-sanitizer.php
+++ b/includes/sanitizers/class-amp-meta-sanitizer.php
@@ -115,15 +115,6 @@ public function sanitize() {
 		$meta_elements = iterator_to_array( $this->dom->getElementsByTagName( static::$tag ), false );
 
 		foreach ( $meta_elements as $meta_element ) {
-
-			// Strip whitespace around equal signs. Won't be needed after <https://github.com/ampproject/amphtml/issues/26496> is resolved.
-			if ( $meta_element->hasAttribute( Attribute::CONTENT ) ) {
-				$meta_element->setAttribute(
-					Attribute::CONTENT,
-					preg_replace( '/\s*=\s*/', '=', $meta_element->getAttribute( Attribute::CONTENT ) )
-				);
-			}
-
 			/**
 			 * Meta tag to process.
 			 *
diff --git a/package-lock.json b/package-lock.json
index 729a850d271..31d4c58db29 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16819,9 +16819,9 @@
       }
     },
     "postcss": {
-      "version": "8.4.8",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.8.tgz",
-      "integrity": "sha512-2tXEqGxrjvAO6U+CJzDL2Fk2kPHTv1jQsYkSoMeOis2SsYaXRO2COxTdQp99cYvif9JTXaAk9lYGc3VhJt7JPQ==",
+      "version": "8.4.11",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.11.tgz",
+      "integrity": "sha512-D+jFLnT0ilGfy4CVBGbC+XE68HkVpT8+CUkDrcSpgxmo4RKco2uaZ4kIoyVGEm+m8KN/+Vwgs8MtpNbQ3/ma9w==",
       "dev": true,
       "requires": {
         "nanoid": "^3.3.1",
diff --git a/package.json b/package.json
index a58fb96f1d8..c51ba316a39 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "lodash": "4.17.21",
     "moment": "2.29.1",
     "npm-run-all": "4.1.5",
-    "postcss": "8.4.8",
+    "postcss": "8.4.11",
     "postcss-import": "14.0.2",
     "postcss-loader": "4.3.0",
     "postcss-nested": "5.0.1",
diff --git a/tests/php/test-amp-style-sanitizer.php b/tests/php/test-amp-style-sanitizer.php
index 787db1fd22e..d8f2bc2765e 100644
--- a/tests/php/test-amp-style-sanitizer.php
+++ b/tests/php/test-amp-style-sanitizer.php
@@ -3496,6 +3496,7 @@ function( $original_dom, $original_source, $amphtml_dom, $amphtml_source ) {
 
 					$this->assertStringContainsString( '.wp-block-audio figcaption', $amphtml_source, 'Expected block-library/style.css' );
 					$this->assertStringContainsString( '[class^="wp-block-"]:not(.wp-block-gallery) figcaption', $amphtml_source, 'Expected twentyten/blocks.css' );
+					$amphtml_source = preg_replace( '/\s*>\s*/', '>', $amphtml_source ); // Account for variance in postcss.
 					$this->assertStringContainsString( '.amp-wp-default-form-message>p', $amphtml_source, 'Expected amp-default.css' );
 					$this->assertStringContainsString( 'ab-empty-item', $amphtml_source, 'Expected admin-bar.css to still be present.' );
 					$this->assertStringNotContainsString( 'earlyprintstyle', $amphtml_source, 'Expected early print style to not be present.' );
diff --git a/tests/php/validation/test-class-amp-validation-manager.php b/tests/php/validation/test-class-amp-validation-manager.php
index fba574aa5ae..ee2db4fe4fd 100644
--- a/tests/php/validation/test-class-amp-validation-manager.php
+++ b/tests/php/validation/test-class-amp-validation-manager.php
@@ -1237,13 +1237,12 @@ static function () {
 					'//script[ @id = "jquery-core-js-before" ]',
 					'//script[ @id = "jquery-core-js-after" ]',
 					'//script[ @id = "wp-dom-ready-js" ]',
-					'//script[ @id = "wp-dom-ready-js-translations" ]',
 					'//script[ @id = "quicktags-js" ]',
 					'//script[ @id = "quicktags-js-extra" ]',
 					'//script[ contains( text(), "window.wpActiveEditor" ) ]',
 				],
 				function ( ...$sources_sets ) {
-					$this->assertCount( 7, $sources_sets );
+					$this->assertCount( 6, $sources_sets );
 					foreach ( $sources_sets as $sources ) {
 						$amp_source_count = 0;
 						foreach ( $sources as $source ) {