diff --git a/backend/sample.env b/backend/sample.env
index 9f3441568..14c67ca7a 100644
--- a/backend/sample.env
+++ b/backend/sample.env
@@ -89,9 +89,9 @@ PROMPT_PORT=3003
 PROMPT_STUDIO_FILE_PATH=/app/prompt-studio-data
 
 # Structure Tool
-STRUCTURE_TOOL_IMAGE_URL="docker:unstract/tool-structure:0.0.20"
+STRUCTURE_TOOL_IMAGE_URL="docker:unstract/tool-structure:0.0.21"
 STRUCTURE_TOOL_IMAGE_NAME="unstract/tool-structure"
-STRUCTURE_TOOL_IMAGE_TAG="0.0.20"
+STRUCTURE_TOOL_IMAGE_TAG="0.0.21"
 
 # Feature Flags
 EVALUATION_SERVER_IP=localhost