diff --git a/index.js b/index.js
index 6805203..69a56c6 100644
--- a/index.js
+++ b/index.js
@@ -308,7 +308,7 @@ class UtilityFunctions {
 		if (!cssHash) {
 			throw new Error("Failed to update CSP for style-src");
 		}
-		html = html.replace(/(?<=style-src[\s\t]{1,})((?<directive>[\"\'][^\s]+[\"\'])[\s]{0,})+(?=\;)/gm, ` 'sha256-${cssHash}'`);
+		html = html.replace(/style-src[\s\t]{1,}((?<directive>[\"\'][^\s]+[\"\'])[\s]{0,})+(?=\;)/gm, `style-src-elem 'sha256-${cssHash}'`);
 
 		html = html.replace(sheet.ownerNode.outerHTML, `<style>${css}</style>`);
 		return html;
@@ -380,7 +380,7 @@ class UtilityFunctions {
 			throw new Error("Failed to update CSP for script-src");
 		}
 		// update the csp
-		html = html.replace(/(?<=script-src[\s\t]{1,})((?<directive>[\"\'][^\s]+[\"\'])[\s]{0,})+(?=\;)/gm, ` 'sha256-${jsHash}'`);
+		html = html.replace(/script-src[\s\t]{1,}((?<directive>[\"\'][^\s]+[\"\'])[\s]{0,})+(?=\;)/gm, `script-src-elem 'sha256-${jsHash}'`);
 		return html;
 	}
 }