diff --git a/DESCRIPTION b/DESCRIPTION
index 678ec63..2d91c1a 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -9,7 +9,7 @@ Description: Functions to search and extract variables based on keywords
     from the ALSPAC data dictionary.
 License: Artistic-2.0
 Depends:
-    R (>= 3.5.0)
+    R (>= 4.1.0)
 Imports:
     dplyr,
     haven,
diff --git a/R/zzz.r b/R/zzz.r
index 28d7d5a..725452d 100644
--- a/R/zzz.r
+++ b/R/zzz.r
@@ -1,8 +1,8 @@
 .onAttach <- function(libname, pkgname) {
-  packageStartupMessage("R/alspac version ", utils::packageVersion("alspac"), ".\n",
+  packageStartupMessage(paste("R/alspac version ", utils::packageVersion("alspac"), ".\n",
                         "We have made several changes to how the extractVars function works.\n",
                         "This may lead to slightly different formatting compared to previously.\n",
-                        "See also the new createDictionary function.")
+                        "See also the new createDictionary function."))
 }
 
 .onLoad <- function(libname, pkgname) {
diff --git a/inst/data/current.rdata b/inst/data/current.rdata
deleted file mode 100644
index 1feceea..0000000
Binary files a/inst/data/current.rdata and /dev/null differ