diff --git a/DESCRIPTION b/DESCRIPTION
index fbaad19..db72e05 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: greta.gp
 Title: Gaussian Process Modelling in 'greta'
-Version: 0.2.0.9000
+Version: 0.2.1
 Authors@R: c(
     person(
       given = "Nick", 
diff --git a/R/gp.R b/R/gp.R
index feeddd9..7638ae2 100644
--- a/R/gp.R
+++ b/R/gp.R
@@ -8,7 +8,7 @@
 #' @param x,x_new greta array giving the coordinates at which to evaluate the
 #'   Gaussian process
 #' @param kernel a kernel function created using one of the
-#'   [`kernel()`][greta.gp::kernels] methods
+#'   [kernel()][greta.gp::kernels] methods
 #' @param inducing an optional greta array giving the coordinates of inducing
 #'   points in a sparse (reduced rank) Gaussian process model
 #' @param n the number of independent Gaussian processes to define with
diff --git a/README.Rmd b/README.Rmd
index 4cfc21b..0c8d836 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -33,7 +33,7 @@ You can install the current release version of `greta.gp` from CRAN:
 install.packages("greta.gp")
 ```
 
-Or install the development version of `greta.dynamics` from [r-universe](https://greta-dev.r-universe.dev/ui#builds):
+Or install the development version of `greta.dynamics` from [r-universe](http://greta-dev.r-universe.dev/ui/):
 
 ```r
 install.packages("greta.gp", repos = "https://greta-dev.r-universe.dev")
diff --git a/README.md b/README.md
index aadf1eb..023f225 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ install.packages("greta.gp")
 ```
 
 Or install the development version of `greta.dynamics` from
-[r-universe](https://greta-dev.r-universe.dev/ui#builds):
+[r-universe](http://greta-dev.r-universe.dev/ui/):
 
 ``` r
 install.packages("greta.gp", repos = "https://greta-dev.r-universe.dev")
diff --git a/cran-comments.md b/cran-comments.md
index 858617d..08bc282 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,5 +1,5 @@
 ## R CMD check results
 
-0 errors | 0 warnings | 1 note
+0 errors | 0 warnings | 0 note
 
-* This is a new release.
+* Submitted this release to address "_PACKAGE" sentinel value
diff --git a/man/gp.Rd b/man/gp.Rd
index 84930de..643cdae 100644
--- a/man/gp.Rd
+++ b/man/gp.Rd
@@ -14,7 +14,7 @@ project(f, x_new, kernel = NULL)
 Gaussian process}
 
 \item{kernel}{a kernel function created using one of the
-\code{\link[=kernels]{kernel()}} methods}
+\link[=kernels]{kernel()} methods}
 
 \item{inducing}{an optional greta array giving the coordinates of inducing
 points in a sparse (reduced rank) Gaussian process model}