diff --git a/modules/sratools/prefetch/meta.yml b/modules/sratools/prefetch/meta.yml
index e08b708c..2ca53af3 100644
--- a/modules/sratools/prefetch/meta.yml
+++ b/modules/sratools/prefetch/meta.yml
@@ -10,7 +10,7 @@ tools:
       homepage: https://github.com/ncbi/sra-tools
       documentation: https://github.com/ncbi/sra-tools/wiki
       tool_dev_url: https://github.com/ncbi/sra-tools
-      licence: ["US-Government-Work"]
+      licence: ["Public Domain"]
 
 input:
   - meta: