diff --git a/.github/workflows/cygwin-520.yml b/.github/workflows/cygwin-520.yml
index 248f40ce2..e0d5cf343 100644
--- a/.github/workflows/cygwin-520.yml
+++ b/.github/workflows/cygwin-520.yml
@@ -12,6 +12,6 @@ jobs:
     uses: ./.github/workflows/common.yml
     with:
       runs_on: windows-latest
-      compiler: ocaml-variants.5.2.0~alpha1+options+win
+      compiler: ocaml-variants.5.2.0~beta1+options+win
       cygwin: true
       timeout: 360
diff --git a/.github/workflows/linux-520-32bit.yml b/.github/workflows/linux-520-32bit.yml
index 1858a7a00..6e00f9438 100644
--- a/.github/workflows/linux-520-32bit.yml
+++ b/.github/workflows/linux-520-32bit.yml
@@ -11,5 +11,5 @@ jobs:
   build:
     uses: ./.github/workflows/common.yml
     with:
-      compiler: 'ocaml-variants.5.2.0~alpha1+options,ocaml-option-32bit'
+      compiler: 'ocaml-variants.5.2.0~beta1+options,ocaml-option-32bit'
       timeout: 240
diff --git a/.github/workflows/linux-520-bytecode.yml b/.github/workflows/linux-520-bytecode.yml
index 8442a81fa..553bf1641 100644
--- a/.github/workflows/linux-520-bytecode.yml
+++ b/.github/workflows/linux-520-bytecode.yml
@@ -11,5 +11,5 @@ jobs:
   build:
     uses: ./.github/workflows/common.yml
     with:
-      compiler: 'ocaml-variants.5.2.0~alpha1+options,ocaml-option-bytecode-only'
+      compiler: 'ocaml-variants.5.2.0~beta1+options,ocaml-option-bytecode-only'
       timeout: 240
diff --git a/.github/workflows/linux-520-debug.yml b/.github/workflows/linux-520-debug.yml
index e2c1fb1fe..c513ef9e1 100644
--- a/.github/workflows/linux-520-debug.yml
+++ b/.github/workflows/linux-520-debug.yml
@@ -11,7 +11,7 @@ jobs:
   build:
     uses: ./.github/workflows/common.yml
     with:
-      compiler: 'ocaml-base-compiler.5.2.0~alpha1'
+      compiler: 'ocaml-base-compiler.5.2.0~beta1'
       dune_profile: 'debug-runtime'
       runparam: 's=4096,v=0,V=1'
       timeout: 240
diff --git a/.github/workflows/linux-520-fp.yml b/.github/workflows/linux-520-fp.yml
index 9030c27e6..4fa78db16 100644
--- a/.github/workflows/linux-520-fp.yml
+++ b/.github/workflows/linux-520-fp.yml
@@ -11,5 +11,5 @@ jobs:
   build:
     uses: ./.github/workflows/common.yml
     with:
-      compiler: 'ocaml-variants.5.2.0~alpha1+options,ocaml-option-fp'
+      compiler: 'ocaml-variants.5.2.0~beta1+options,ocaml-option-fp'
       timeout: 240
diff --git a/.github/workflows/linux-520.yml b/.github/workflows/linux-520.yml
index 9b8dafd1c..bc661d9f9 100644
--- a/.github/workflows/linux-520.yml
+++ b/.github/workflows/linux-520.yml
@@ -11,4 +11,4 @@ jobs:
   build:
     uses: ./.github/workflows/common.yml
     with:
-      compiler: 'ocaml-base-compiler.5.2.0~alpha1'
+      compiler: 'ocaml-base-compiler.5.2.0~beta1'
diff --git a/.github/workflows/macosx-520.yml b/.github/workflows/macosx-520.yml
index 2f05b5347..e087cc41d 100644
--- a/.github/workflows/macosx-520.yml
+++ b/.github/workflows/macosx-520.yml
@@ -11,5 +11,5 @@ jobs:
   build:
     uses: ./.github/workflows/common.yml
     with:
-      compiler: 'ocaml-base-compiler.5.2.0~alpha1'
+      compiler: 'ocaml-base-compiler.5.2.0~beta1'
       runs_on: 'macos-latest'
diff --git a/.github/workflows/mingw-520-bytecode.yml b/.github/workflows/mingw-520-bytecode.yml
index 2f949e822..979f3f29f 100644
--- a/.github/workflows/mingw-520-bytecode.yml
+++ b/.github/workflows/mingw-520-bytecode.yml
@@ -12,5 +12,5 @@ jobs:
     uses: ./.github/workflows/common.yml
     with:
       runs_on: windows-latest
-      compiler: ocaml-variants.5.2.0~alpha1+options+win,ocaml-option-mingw,ocaml-option-bytecode-only
+      compiler: ocaml-variants.5.2.0~beta1+options+win,ocaml-option-mingw,ocaml-option-bytecode-only
       timeout: 240
diff --git a/.github/workflows/mingw-520.yml b/.github/workflows/mingw-520.yml
index 095771550..58d4d3a79 100644
--- a/.github/workflows/mingw-520.yml
+++ b/.github/workflows/mingw-520.yml
@@ -12,5 +12,5 @@ jobs:
     uses: ./.github/workflows/common.yml
     with:
       runs_on: windows-latest
-      compiler: ocaml-variants.5.2.0~alpha1+options+win,ocaml-option-mingw
+      compiler: ocaml-variants.5.2.0~beta1+options+win,ocaml-option-mingw
       timeout: 240