diff --git a/DESCRIPTION b/DESCRIPTION
index 27cd967..fa3246d 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -21,7 +21,7 @@ Description: Casting metadata for REDCap database creation and handling of
     4) procedures for data integration and interoperability with external 
     sources (Harris et al (2009) <doi:10.1016/j.jbi.2008.08.010>; 
     Harris et al (2019) <doi:10.1016/j.jbi.2019.103208>).
-Depends: R (>= 3.4.0)
+Depends: R (>= 4.1.0)
 Suggests:
     httr,
     jsonlite,