diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e4d4274..4bd3e31 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,8 +17,8 @@ jobs:
     runs-on: ubuntu-latest
     env:
       OCAML_VERSION: "5.4"
-      DUNE_VERSION: "3.23.0"
-      DUNE_DIGEST: "sha256:5588605a056545459833b10fcbfffa240841fa440d92862bfe94a4c8bfc52400"
+      DUNE_VERSION: "3.23.1"
+      DUNE_DIGEST: "sha256:9cbcc7fe3b7df76f862c9ab73c241a6106b799765bdd85c75d2e31dc5f410d07"
     defaults:
       run:
         shell: bash
diff --git a/.github/workflows/deploy-odoc.yml b/.github/workflows/deploy-odoc.yml
index 005a923..e3f5cd5 100644
--- a/.github/workflows/deploy-odoc.yml
+++ b/.github/workflows/deploy-odoc.yml
@@ -16,8 +16,8 @@ jobs:
     runs-on: ubuntu-latest
     env:
       OCAML_VERSION: "5.4"
-      DUNE_VERSION: "3.23.0"
-      DUNE_DIGEST: "sha256:5588605a056545459833b10fcbfffa240841fa440d92862bfe94a4c8bfc52400"
+      DUNE_VERSION: "3.23.1"
+      DUNE_DIGEST: "sha256:9cbcc7fe3b7df76f862c9ab73c241a6106b799765bdd85c75d2e31dc5f410d07"
     defaults:
       run:
         shell: bash
diff --git a/.github/workflows/dune-pkg-more-ci.yml b/.github/workflows/dune-pkg-more-ci.yml
index adcc556..c501241 100644
--- a/.github/workflows/dune-pkg-more-ci.yml
+++ b/.github/workflows/dune-pkg-more-ci.yml
@@ -31,11 +31,11 @@ jobs:
           - "5.2"
         include:
           - os: ubuntu-latest
-            dune-version: "3.23.0"
-            dune-digest: "sha256:5588605a056545459833b10fcbfffa240841fa440d92862bfe94a4c8bfc52400"
+            dune-version: "3.23.1"
+            dune-digest: "sha256:9cbcc7fe3b7df76f862c9ab73c241a6106b799765bdd85c75d2e31dc5f410d07"
           - os: macos-latest
-            dune-version: "3.23.0"
-            dune-digest: "sha256:daeaaf1582250706ee1dd12d10a2eef529d3cd68c2e24e6222734b411dd523b8"
+            dune-version: "3.23.1"
+            dune-digest: "sha256:8bf87ea697866dbbb2c85a1a761c541dd93a8a4e0b563f594e7e0322ffb7ba2a"
         exclude:
           # Exclude the combination already tested in the main ci workflow.
           - os: ubuntu-latest