diff --git a/DESCRIPTION b/DESCRIPTION
index a6fb4f1..6fc70b4 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -14,7 +14,7 @@ Authors@R: c(
 Description: Functions for performing spatial microsimulation ('raking')
     in R.
 Depends:
-    R (>= 3.3.1)
+    R (>= 3.4.0)
 License: GPL-3
 Encoding: UTF-8
 LazyData: true
diff --git a/cran-comments.md b/cran-comments.md
index db0b8b8..572dd53 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -6,7 +6,8 @@
 ## Test environments
 * Local Ubuntu Linux (16.06 Xenial) 64-bit, R 3.4.0
 * Ubuntu Linux (12.04.5 Precise) on Travis-CI, R 3.4.0
-* win-builder (R-release v3.4.1 (2017-06-30)) with devtools::build_win()
+* win-builder: R-release v3.4.1 (2017-06-30)
+* win-builder: R-devel (unstable) (2017-06-29 r72864)
 
 
 ## Downstream dependencies