diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 633d913e..e32703ae 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -64,12 +64,12 @@ jobs:
         with:
           ocaml-compiler: "4.14.2"
           opam-disable-sandboxing: true
-          dune-cache: true
+          dune-cache: false
           # opam-repositories: |
           #   default: git+https://github.com/fdopen/opam-repository-mingw.git#opam2
 
-      # - run: |
-      #     opam switch create 4.14.2-mingw32 arch-x86_32 system-mingw ocaml.4.14.2
+      - run: |
+          opam switch create 4.14.2-mingw32 arch-x86_32 system-mingw ocaml.4.14.2
 
       - name: Install deps & build
         run: opam install .  --with-test
diff --git a/.spr.yml b/.spr.yml
new file mode 100644
index 00000000..bf333885
--- /dev/null
+++ b/.spr.yml
@@ -0,0 +1,12 @@
+githubRepoOwner: dmtrKovalenko
+githubRepoName: odiff
+githubHost: github.com
+githubRemote: origin/chore
+githubBranch: esy-nightly
+requireChecks: true
+requireApproval: true
+mergeMethod: rebase
+mergeQueue: false
+forceFetchTags: false
+showPrTitlesInStack: false
+branchPushIndividually: false
diff --git a/dune-project b/dune-project
index 198e9ce3..b4083059 100644
--- a/dune-project
+++ b/dune-project
@@ -32,7 +32,7 @@
  (synopsis "Pixel-by-pixel image difference algorithm")
  (depends
   dune
-  (ocaml (= 4.14.0))
+  (ocaml (= 4.14.2))
  )
 )
 
@@ -42,7 +42,7 @@
  (depends
   dune
   odiff-core
-  (ocaml (= 4.14.0))
+  (ocaml (= 4.14.2))
   (dune-configurator (>= 2.8))
  )
 )
diff --git a/odiff-core.opam b/odiff-core.opam
index c4b403bd..c58ee628 100644
--- a/odiff-core.opam
+++ b/odiff-core.opam
@@ -8,7 +8,7 @@ homepage: "https://github.com/dmtrKovalenko/odiff"
 bug-reports: "https://github.com/dmtrKovalenko/odiff/issues"
 depends: [
   "dune" {>= "2.8"}
-  "ocaml" {= "4.14.0"}
+  "ocaml" {= "4.14.2"}
   "odoc" {with-doc}
 ]
 build: [
@@ -16,6 +16,7 @@ build: [
   [
     "dune"
     "build"
+    "--verbose"
     "-p"
     name
     "-j"
diff --git a/odiff-io.opam b/odiff-io.opam
index 1c10ae01..721365a5 100644
--- a/odiff-io.opam
+++ b/odiff-io.opam
@@ -9,7 +9,7 @@ bug-reports: "https://github.com/dmtrKovalenko/odiff/issues"
 depends: [
   "dune" {>= "2.8"}
   "odiff-core"
-  "ocaml" {= "4.14.0"}
+  "ocaml" {= "4.14.2"}
   "dune-configurator" {>= "2.8"}
   "odoc" {with-doc}
 ]