diff --git a/dune-project b/dune-project
index 95c0987..f8a7692 100644
--- a/dune-project
+++ b/dune-project
@@ -23,7 +23,7 @@ sqlite3-ocaml is an OCaml library with bindings to the SQLite3 client API.
 Sqlite3 is a self-contained, serverless, zero-configuration, transactional SQL
 database engine with outstanding performance for many use cases.")
   (depends
-    (ocaml (>= 4.08))
+    (ocaml (>= 4.05))
     (dune (>= 1.11))
     (conf-sqlite3 :build)
     (base :build)
diff --git a/sqlite3.opam b/sqlite3.opam
index 2b1f00e..55c6e18 100644
--- a/sqlite3.opam
+++ b/sqlite3.opam
@@ -22,7 +22,7 @@ sqlite3-ocaml is an OCaml library with bindings to the SQLite3 client API.
 Sqlite3 is a self-contained, serverless, zero-configuration, transactional SQL
 database engine with outstanding performance for many use cases."""
 depends: [
-  "ocaml" {>= "4.08"}
+  "ocaml" {>= "4.05"}
   "dune" {>= "1.11"}
   "conf-sqlite3" {build}
   "base" {build}