diff --git a/CHANGES.md b/CHANGES.md
index e95b5e0..55287dc 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,7 +1,8 @@
 # Unreleased
 
-## Bug fixes
+ * Drop ezjsonm dependency for `gitlab` (#76 @tmcgilchrist)
 
+## Bug fixes
  * `gitlab.atd`: `description` is nullable (#75 @maiste)
 
 # 0.1.6 - 2022-11-08
diff --git a/dune-project b/dune-project
index 1443b0d..47a14bc 100644
--- a/dune-project
+++ b/dune-project
@@ -18,7 +18,6 @@
   (cohttp-lwt (>= 4.0))
   (atdgen (>= 2.8.0))
   (yojson (>= 1.7.0))
-  ezjsonm
   (ISO8601 (>= 0.2.6))
   stringext)
  (synopsis "GitLab APIv4 OCaml library")
diff --git a/gitlab-unix.opam b/gitlab-unix.opam
index f8c65c7..19be4bc 100644
--- a/gitlab-unix.opam
+++ b/gitlab-unix.opam
@@ -25,6 +25,7 @@ depends: [
   "alcotest" {with-test}
   "odoc" {with-doc}
 ]
+dev-repo: "git+https://github.com/tmcgilchrist/ocaml-gitlab.git"
 build: [
   ["dune" "subst"] {dev}
   [
@@ -41,5 +42,5 @@ build: [
   ]
   ["dune" "install" "-p" name "--create-install-files" name]
 ]
-dev-repo: "git+https://github.com/tmcgilchrist/ocaml-gitlab.git"
+
 available: [ arch != "x86_32" & arch != "arm32" & arch != "ppc32" ]
diff --git a/gitlab.opam b/gitlab.opam
index 5bcd719..d255c61 100644
--- a/gitlab.opam
+++ b/gitlab.opam
@@ -20,7 +20,6 @@ depends: [
   "cohttp-lwt" {>= "4.0"}
   "atdgen" {>= "2.8.0"}
   "yojson" {>= "1.7.0"}
-  "ezjsonm"
   "ISO8601" {>= "0.2.6"}
   "stringext"
   "odoc" {with-doc}
diff --git a/lib/dune b/lib/dune
index 4f4ef15..d430791 100644
--- a/lib/dune
+++ b/lib/dune
@@ -21,4 +21,4 @@
  (public_name gitlab)
  (wrapped false)
  (modules gitlab_s gitlab_core gitlab_j gitlab_t gitlab_json)
- (libraries cohttp-lwt ISO8601 ezjsonm uri yojson atdgen str))
+ (libraries cohttp-lwt ISO8601 uri yojson atdgen str))
diff --git a/lib/gitlab_json.ml b/lib/gitlab_json.ml
index 08d35b5..5f77551 100644
--- a/lib/gitlab_json.ml
+++ b/lib/gitlab_json.ml
@@ -8,6 +8,8 @@ module Adapter = struct
   end)
 end
 
+exception Parse_error of Yojson.Safe.t * string
+
 module Date = struct
   type t = float
 
@@ -15,7 +17,7 @@ module Date = struct
     try ISO8601.Permissive.date str
     with Failure _ ->
       raise
-        (Ezjsonm.Parse_error
+        (Parse_error
            ( `String str,
              Format.sprintf "%s: Date.wrap can't parse date format YYYY-MM-DD"
                str ))
@@ -30,7 +32,7 @@ module DateTime = struct
     try ISO8601.Permissive.datetime str
     with Failure _ ->
       raise
-        (Ezjsonm.Parse_error
+        (Parse_error
            ( `String str,
              Format.sprintf "%s: DateTime.wrap can't parse ISO8601 date" str ))