diff --git a/yoti-sdk-parent/pom.xml b/yoti-sdk-parent/pom.xml
index df004db7..9e75ac7b 100644
--- a/yoti-sdk-parent/pom.xml
+++ b/yoti-sdk-parent/pom.xml
@@ -91,7 +91,7 @@
     <slf4j.version>2.0.16</slf4j.version>
     <bouncycastle.version>1.81</bouncycastle.version>
     <jackson.version>2.19.0</jackson.version>
-    <protobuf-java.version>3.25.8</protobuf-java.version>
+    <protobuf-java.version>4.36.2</protobuf-java.version>
     <httpmime.version>4.5.14</httpmime.version>
     
     <!-- spring versions -->