diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eeb50d5..d8f14f5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,6 +25,7 @@ jobs:
         version:
           - 'nightly'
           - '1'
+          - '1.9'
         os:
           - ubuntu-latest
           - macOS-latest
@@ -35,6 +36,9 @@ jobs:
         exclude:
           - os: macOS-latest
             arch: x86
+          - os: windows-latest # Killing workers doesn't work on windows in 1.9
+            version: '1.9'
+
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
diff --git a/Project.toml b/Project.toml
index 97fc7e9..9ab3094 100644
--- a/Project.toml
+++ b/Project.toml
@@ -7,6 +7,12 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Serialization = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
 Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"
 
+[compat]
+Random = "1"
+Serialization = "1"
+Sockets = "1"
+julia = "1.9"
+
 [extras]
 LibSSH = "00483490-30f8-4353-8aba-35b82f51f4d0"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
diff --git a/docs/src/_changelog.md b/docs/src/_changelog.md
index cb79989..3b18108 100644
--- a/docs/src/_changelog.md
+++ b/docs/src/_changelog.md
@@ -7,7 +7,7 @@ CurrentModule = DistributedNext
 This documents notable changes in DistributedNext.jl. The format is based on
 [Keep a Changelog](https://keepachangelog.com).
 
-## Unreleased
+## [v1.0.0] - 2024-12-02
 
 ### Fixed
 - Fixed behaviour of `isempty(::RemoteChannel)`, which previously had the
diff --git a/test/distributed_exec.jl b/test/distributed_exec.jl
index 156b986..106787b 100644
--- a/test/distributed_exec.jl
+++ b/test/distributed_exec.jl
@@ -762,7 +762,7 @@ end
 # since they print errors. The test block is enabled by defining env
 # JULIA_TESTFULL=1.
 
-DoFullTest = Base.get_bool_env("JULIA_TESTFULL", false)
+DoFullTest = get(ENV, "JULIA_TESTFULL", "0") == "1"
 
 if DoFullTest
     println("Testing exception printing on remote worker from a `remote_do` call")
@@ -1435,7 +1435,11 @@ v2669=10
             thrown = true
             local b = IOBuffer()
             showerror(b, e)
-            @test occursin("sqrt was called with a negative real argument", String(take!(b)))
+            if VERSION < v"1.10"
+                @test occursin("sqrt will only return a complex result", String(take!(b)))
+            else
+                @test occursin("sqrt was called with a negative real argument", String(take!(b)))
+            end
         end
         @test thrown
     end