diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cf24e95..8e1b9e2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -29,4 +29,6 @@ jobs:
         with:
           ocaml-version: ${{ matrix.ocaml-version }}
 
-      - run: opam pin add FrontC.dev . --yes --with-test
+      - run: opam pin add FrontC . --no-action
+      - run: opam install FrontC --deps-only
+      - run: dune build @install @runtest
diff --git a/ctoxml/dune b/ctoxml/dune
index 82494cc..aeed611 100644
--- a/ctoxml/dune
+++ b/ctoxml/dune
@@ -5,10 +5,7 @@
   (libraries FrontC))
 
 (env
- (_ (binaries (./ctoxml_bin.exe as ctoxml))))
-
+ (_ (binaries (./ctoxml as ctoxml))))
 
 (cram
-  (package ctoxml)
-  (applies_to test)
   (deps %{bin:ctoxml}))
\ No newline at end of file
diff --git a/dune b/dune
index 18a21d8..95b4203 100644
--- a/dune
+++ b/dune
@@ -1,4 +1,2 @@
 (cram
- (package FrontC)
- (applies_to test.t)
  (deps printc/printc_bin.exe))
diff --git a/dune-project b/dune-project
index c55d750..d852250 100644
--- a/dune-project
+++ b/dune-project
@@ -1,4 +1,4 @@
-(lang dune 2.8)
+(lang dune 2.7)
 (using menhir 2.0)
 (cram enable)
 (version 4.0.0)
@@ -18,7 +18,7 @@
  (description "FrontC provides a C parser and an OCaml definition \
                of an abstract syntax treee for the C language. It also \
                includes AST pretty-printers in plain and XML formats.")
- (depends (dune (>= 2.8)) menhir)
+ (depends (dune (>= 2.7)) menhir)
  (tags (FrontC C parser XML)))
 
 (package