diff --git a/.github/workflows/testing.yaml b/.github/workflows/testing.yaml
index 246da02..f053659 100644
--- a/.github/workflows/testing.yaml
+++ b/.github/workflows/testing.yaml
@@ -21,7 +21,7 @@ jobs:
     strategy:
       matrix:
         julia-version:
-          - '1.8'
+          - '1.9'
           - '1'
         os:
           - ubuntu-latest
diff --git a/Project.toml b/Project.toml
index 2cd763f..298914b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -30,21 +30,21 @@ DataFrames = "0.21, 0.22, 1.0"
 Distances = "0.10"
 EcoBase = "0.1"
 Git = "1"
-InteractiveUtils = "1.8"
+InteractiveUtils = "1.9"
 JuliaFormatter = "1"
-LinearAlgebra = "1.8"
+LinearAlgebra = "1.9"
 Logging = "1"
 Missings = "0.4, 1.0"
 Phylo = "0.4, 0.5"
-Pkg = "1.8"
+Pkg = "1.9"
 RCall = "0.13, 0.14"
 RecipesBase = "0.6, 0.7, 0.8, 1"
 Requires = "^1"
 ResearchSoftwareMetadata = "0.1.1"
 SpatialEcology = "0.9"
-Statistics = "1.8"
+Statistics = "1.9"
 StatsBase = "0.32, 0.33, 0.34"
-julia = "1.8"
+julia = "1.9"
 
 [[author_details]]
 name = "Richard Reeve"
diff --git a/README.md b/README.md
index 910c45b..35dc7af 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ installed with `add`. For example on Julia v1.10:
 
 ## Project Status
 
-The package is confirmed to build and work against Julia v1.8 and the current
+The package is confirmed to build and work against Julia v1.9 and the current
 release and the latest release on Linux, macOS, and Windows. It is also tested
 against nightly.
 
diff --git a/docs/diversity.md b/docs/diversity.md
index 7666786..c96a0c4 100644
--- a/docs/diversity.md
+++ b/docs/diversity.md
@@ -22,17 +22,17 @@ also new, and may need further improvements.
 
 ## Install
 
-The package is registered in the `General` registry on v1.x and so can be installed with `add`. For example on Julia v1.8:
+The package is registered in the `General` registry on v1.x and so can be installed with `add`. For example on Julia v1.10:
 
 ```julia
-(@v1.8) pkg> add Diversity
+(@v1.10) pkg> add Diversity
     Resolving package versions...
-    Updating `~/.julia/environments/v1.8/Project.toml`
-  [d3d5718d] + Diversity v0.5.8
-    Updating `~/.julia/environments/v1.8/Manifest.toml`
-  [d3d5718d] + Diversity v0.5.8
+    Updating `~/.julia/environments/v1.10/Project.toml`
+  [d3d5718d] + Diversity v0.5.15
+    Updating `~/.julia/environments/v1.10/Manifest.toml`
+  [d3d5718d] + Diversity v0.5.15
   
-(@v1.8) pkg>
+(@v1.10) pkg>
 ```
 
 ## Usage