From d73630e9d7f806ee23921b4fd2d00cbea5d7fc33 Mon Sep 17 00:00:00 2001
From: Kevin Baird <kevincbaird@gmail.com>
Date: Mon, 17 Aug 2026 19:00:18 -0700
Subject: [PATCH 1/4] Add Elixir 1.20 and OTP 29 to CI matrix

---
 .github/workflows/ci.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d46d7ca..8bcdd46 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,6 +22,9 @@ jobs:
               elixir: "1.18"
               otp: "27"
             lint: lint
+          - pair:
+              elixir: "1.20"
+              otp: "29"
     steps:
       - uses: actions/checkout@v4
 

From fd5f01801fc2fb149bdb85ef81d53f5f2532d5d4 Mon Sep 17 00:00:00 2001
From: Kevin Baird <kevincbaird@gmail.com>
Date: Tue, 18 Aug 2026 07:05:12 -0700
Subject: [PATCH 2/4] Update ubuntu runner and elixir/otp versions

---
 .github/workflows/ci.yml | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8bcdd46..fdc4544 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     env:
       MIX_ENV: test
     strategy:
@@ -16,15 +16,20 @@ jobs:
       matrix:
         include:
           - pair:
-              elixir: "1.7"
-              otp: "22"
+              elixir: "1.15"
+              otp: "26"
           - pair:
               elixir: "1.18"
               otp: "27"
             lint: lint
+          - pair:
+              elixir: "1.19"
+              otp: "28"
+            lint: lint
           - pair:
               elixir: "1.20"
               otp: "29"
+            lint: lint
     steps:
       - uses: actions/checkout@v4
 

From c41ecff2e384080d46df84c37f32d8b5cdf514f2 Mon Sep 17 00:00:00 2001
From: Kevin Baird <kevincbaird@gmail.com>
Date: Tue, 18 Aug 2026 07:07:17 -0700
Subject: [PATCH 3/4] Raise minimum Elixir version to 1.15

---
 mix.exs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mix.exs b/mix.exs
index f195d7e..da00e7a 100644
--- a/mix.exs
+++ b/mix.exs
@@ -7,7 +7,7 @@ defmodule Flow.Mixfile do
     [
       app: :flow,
       version: @version,
-      elixir: "~> 1.7",
+      elixir: "~> 1.15",
       package: package(),
       description: "Computational parallel flows for Elixir",
       start_permanent: Mix.env() == :prod,

From 23bf7691213a3657f3f43c302cdbd65d53c83b47 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Valim?= <jose.valim@gmail.com>
Date: Tue, 18 Aug 2026 17:24:25 +0200
Subject: [PATCH 4/4] Remove redundant lint entries from CI workflow

---
 .github/workflows/ci.yml | 2 --
 1 file changed, 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fdc4544..47d41e0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,11 +21,9 @@ jobs:
           - pair:
               elixir: "1.18"
               otp: "27"
-            lint: lint
           - pair:
               elixir: "1.19"
               otp: "28"
-            lint: lint
           - pair:
               elixir: "1.20"
               otp: "29"