diff --git a/lexers/embedded/prql.xml b/lexers/embedded/prql.xml
index 0360513..21f21c6 100644
--- a/lexers/embedded/prql.xml
+++ b/lexers/embedded/prql.xml
@@ -61,7 +61,7 @@
       <rule pattern="\\([\\bfnrt&quot;\&#x27;]|\n|x[a-fA-F0-9]{2}|[0-7]{1,3})"><token type="LiteralStringEscape"/></rule>
     </state>
     <state name="stringescape">
-      <rule pattern="\\(N\{.*?\}|u[a-fA-F0-9]{4}|U[a-fA-F0-9]{8})"><token type="LiteralStringEscape"/></rule>
+      <rule pattern="\\(N\{.*?\}|u\{[a-fA-F0-9]{1,6}\})"><token type="LiteralStringEscape"/></rule>
       <rule><include state="bytesescape"/></rule>
     </state>
     <state name="fstrings-single">