diff --git a/DESCRIPTION b/DESCRIPTION
index 42f45720..60918ce6 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: clock
 Title: Date-Time Types and Tools
-Version: 0.3.0.9000
+Version: 0.3.1
 Authors@R: 
     c(person(given = "Davis",
              family = "Vaughan",
@@ -33,7 +33,7 @@ Suggests:
     testthat (>= 3.0.0),
     withr
 LinkingTo: 
-    cpp11 (>= 0.2.7),
+    cpp11 (>= 0.3.1),
     tzdb (>= 0.1.1)
 VignetteBuilder: 
     knitr
diff --git a/NEWS.md b/NEWS.md
index 5db28e22..d1bedd67 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# clock (development version)
+# clock 0.3.1
 
 * Parsing into a date-time type that is coarser than the original string is now
   considered ambiguous and undefined behavior. For example, parsing a string
diff --git a/cran-comments.md b/cran-comments.md
index 521166d4..cc5e072b 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -2,6 +2,10 @@
 
 0 errors | 0 warnings | 0 notes
 
+## 0.3.1 Submission
+
+This is a patch release mainly intended to support an upcoming breaking change in testthat.
+
 ## 0.3.0 Submission
 
 This is a minor release that switches clock to use the date API exposed by tzdb. It also adds a new sequence generation function, `date_seq()`.