diff --git a/DESCRIPTION b/DESCRIPTION
index d03d139..9a34a23 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: spatstat.utils
-Version: 3.0-4.004
-Date: 2024-06-15
+Version: 3.0-4.005
+Date: 2024-06-16
 Title: Utility Functions for 'spatstat'
 Authors@R: c(person("Adrian", "Baddeley", 
                     role = c("aut", "cre"),
diff --git a/NEWS b/NEWS
index f134a3e..19e51a1 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,5 @@
 
-        CHANGES IN spatstat.utils VERSION 3.0-4.004
+        CHANGES IN spatstat.utils VERSION 3.0-4.005
 
 OVERVIEW
 
diff --git a/R/utilseq.R b/R/utilseq.R
index a0ca48c..90d4006 100644
--- a/R/utilseq.R
+++ b/R/utilseq.R
@@ -3,7 +3,7 @@
 #'
 #'  Utilities for sequences, vectors, ranges of values
 #'
-#'       $Revision: 1.22 $ $Date: 2023/09/18 08:33:36 $
+#'       $Revision: 1.23 $ $Date: 2024/06/16 09:07:13 $
 #'
 #'  ==>>  ORIGINAL FILE is in spatstat/develop/Spatstat/R  <<==
 
@@ -258,6 +258,7 @@ evenly.spaced <- function(x, tol=1e-07) {
 }
 
 equispaced <- function(z, reltol=0.001) {
+  .Deprecated("evenly.spaced")
   evenly.spaced(z, reltol)
 }
 
@@ -275,7 +276,7 @@ fastFindInterval <- function(x, b, labels=FALSE, reltol=0.001, dig.lab=3L) {
   nx <- length(x)
   if(nx == 0) {
     y <- integer(0)
-  } else if(equispaced(b, reltol)) {
+  } else if(evenly.spaced(b, reltol)) {
     ## breaks are equally spaced
     zz <- .C(C_fastinterv,
              x          = as.double(x),
diff --git a/inst/doc/packagesizes.txt b/inst/doc/packagesizes.txt
index 25d0ccc..88b01d1 100644
--- a/inst/doc/packagesizes.txt
+++ b/inst/doc/packagesizes.txt
@@ -24,4 +24,4 @@ date version nhelpfiles nobjects ndatasets Rlines srclines
 "2023-03-11" "3.0-2" 39 186 0 3655 2031
 "2023-05-09" "3.0-3" 39 186 0 3667 2031
 "2023-10-24" "3.0-4" 39 186 0 3670 2031
-"2024-06-15" "3.0-4.004" 39 187 0 3687 2031
+"2024-06-16" "3.0-4.005" 41 189 0 3688 2031
diff --git a/man/evenly.spaced.Rd b/man/evenly.spaced.Rd
new file mode 100644
index 0000000..d93e159
--- /dev/null
+++ b/man/evenly.spaced.Rd
@@ -0,0 +1,36 @@
+\name{evenly.spaced}
+\alias{evenly.spaced}
+\title{
+  Determine Whether a Vector is Evenly Spaced and Increasing
+}
+\description{
+  Determines whether the entries in a numeric vector are evenly spaced
+  and increasing.
+}
+\usage{
+evenly.spaced(x, tol = 1e-07)
+}
+\arguments{
+  \item{x}{
+    Numeric vector.
+}
+  \item{tol}{
+    Relative tolerance.
+  }
+}
+\details{
+  The result is \code{TRUE} if \code{x} is an increasing sequence
+  in which the successive differences \code{diff(x)}
+  are all equal to one another (within the specified relative tolerance),
+  and \code{FALSE} otherwise.
+}
+\value{
+  A single logical value.
+}
+\author{
+  \adrian.
+}
+\examples{
+  evenly.spaced(seq(0, 1, length=4))
+}
+\keyword{manip}
diff --git a/man/spatstat.utils-deprecated.Rd b/man/spatstat.utils-deprecated.Rd
new file mode 100644
index 0000000..64ef80a
--- /dev/null
+++ b/man/spatstat.utils-deprecated.Rd
@@ -0,0 +1,18 @@
+\name{spatstat.utils-deprecated} 
+\title{Deprecated Functions of spatstat.utils Package}
+\alias{spatstat.utils-deprecated}  %DoNotExport
+\alias{equispaced}          
+\description{
+  Deprecated functions of the \code{spatstat.utils} package.
+}
+\usage{
+equispaced(z, reltol=0.001)
+}
+\arguments{
+  \item{z}{Numeric vector.}
+  \item{reltol}{Numeric value for relative tolerance.}
+}
+\details{
+  \code{equispaced} has been replaced by \code{\link{evenly.spaced}}.
+}
+\keyword{deprecated}
diff --git a/man/spatstat.utils-internal.Rd b/man/spatstat.utils-internal.Rd
index 9109dba..c1fd783 100644
--- a/man/spatstat.utils-internal.Rd
+++ b/man/spatstat.utils-internal.Rd
@@ -1,5 +1,6 @@
 \name{spatstat.utils-internal} 
 \title{Internal Functions of spatstat.utils Package}
+\alias{spatstat.utils-internal}  %DoNotExport
 \alias{adjustthinrange}
 \alias{apply23sum}
 \alias{as2vector}
@@ -23,9 +24,7 @@
 \alias{dround}
 \alias{ensure2vector}
 \alias{ensure3Darray}
-\alias{equispaced}          
 \alias{eratosthenes}
-\alias{evenly.spaced}
 \alias{exceedsMaxArraySize}
 \alias{exhibitStringList}
 \alias{explain.ifnot}
@@ -134,9 +133,7 @@ dropifsingle(x)
 dround(x)
 ensure2vector(x)
 ensure3Darray(x)
-equispaced(z, reltol)
 eratosthenes(nmax, startset)
-evenly.spaced(x, tol)
 exhibitStringList(prefix, strings)
 exceedsMaxArraySize(\dots)
 explain.ifnot(expr, context)