diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7553ae1e7..20a4ddaf1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,7 +36,7 @@ jobs:
 
         # Ocaml versions to use
         ocaml-version:
-          - ocaml-base-compiler.4.14.0
+          - ocaml-base-compiler.5.2.0
 
     # Build ENV
     # ---------
diff --git a/.github/workflows/install.yml b/.github/workflows/install.yml
index 11d719d24..08d1ac93a 100644
--- a/.github/workflows/install.yml
+++ b/.github/workflows/install.yml
@@ -38,10 +38,6 @@ jobs:
         # must do a bit of work manually to get a correct ocaml-version
         include:
           # linux
-          - ocaml-version: ocaml-base-compiler.4.10.1
-            os: ubuntu-latest
-          - ocaml-version: ocaml-base-compiler.4.11.2
-            os: ubuntu-latest
           - ocaml-version: ocaml-base-compiler.4.12.1
             os: ubuntu-latest
           - ocaml-version: ocaml-base-compiler.4.13.1
@@ -52,12 +48,12 @@ jobs:
             os: ubuntu-latest
           - ocaml-version: ocaml-base-compiler.5.0.0
             os: ubuntu-latest
+          - ocaml-version: ocaml-base-compiler.5.1.1
+            os: ubuntu-latest
+          - ocaml-version: ocaml-base-compiler.5.2.0
+            os: ubuntu-latest
 
           # macos
-          - ocaml-version: ocaml-base-compiler.4.10.1
-            os: macos-latest
-          - ocaml-version: ocaml-base-compiler.4.11.2
-            os: macos-latest
           - ocaml-version: ocaml-base-compiler.4.12.1
             os: macos-latest
           - ocaml-version: ocaml-base-compiler.4.13.1
@@ -68,12 +64,12 @@ jobs:
             os: macos-latest
           - ocaml-version: ocaml-base-compiler.5.0.0
             os: macos-latest
+          - ocaml-version: ocaml-base-compiler.5.1.1
+            os: macos-latest
+          - ocaml-version: ocaml-base-compiler.5.2.0
+            os: macos-latest
 
           # Windows
-          - ocaml-version: ocaml-variants.4.10.1+mingw64c
-            os: windows-latest
-          - ocaml-version: ocaml-variants.4.11.2+mingw64c
-            os: windows-latest
           - ocaml-version: ocaml-variants.4.12.1+mingw64c
             os: windows-latest
           - ocaml-version: ocaml-variants.4.13.1+mingw64c
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d345d1906..42609a202 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -32,19 +32,19 @@ jobs:
             dolmen_asset: dolmen-linux-amd64
             dolmenls_artifact: dolmenls
             dolmenls_asset: dolmenls-linux-amd64
-            ocaml-version: ocaml-variants.4.14.0+options,ocaml-option-flambda
+            ocaml-version: ocaml-variants.4.14.2+options,ocaml-option-flambda
           - os: macos-latest
             dolmen_artifact: dolmen
             dolmen_asset: dolmen-macos-amd64
             dolmenls_artifact: dolmenls
             dolmenls_asset: dolmenls-macos-amd64
-            ocaml-version: ocaml-variants.4.14.0+options,ocaml-option-flambda
+            ocaml-version: ocaml-variants.4.14.2+options,ocaml-option-flambda
           - os: windows-latest
             dolmen_artifact: dolmen.exe
             dolmen_asset: dolmen-windows-amd64.exe
             dolmenls_artifact: dolmenls.exe
             dolmenls_asset: dolmenls-windows-amd64.exe
-            ocaml-version: ocaml-variants.4.14.0+flambda+mingw64c
+            ocaml-version: ocaml-variants.4.14.2+flambda+mingw64c
 
     # Build ENV
     # ---------