diff --git a/pkgs/development/ocaml-modules/decoders-bencode/default.nix b/pkgs/development/ocaml-modules/decoders-bencode/default.nix
index 6117dfab67d1..0ae7d2468755 100644
--- a/pkgs/development/ocaml-modules/decoders-bencode/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-bencode/default.nix
@@ -29,7 +29,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Bencode backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-cbor/default.nix b/pkgs/development/ocaml-modules/decoders-cbor/default.nix
index c93b5cd38625..c14b5e2f93d9 100644
--- a/pkgs/development/ocaml-modules/decoders-cbor/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-cbor/default.nix
@@ -29,7 +29,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "CBOR backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-ezjsonm/default.nix b/pkgs/development/ocaml-modules/decoders-ezjsonm/default.nix
index 71ea3a104b73..59c288f859c7 100644
--- a/pkgs/development/ocaml-modules/decoders-ezjsonm/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-ezjsonm/default.nix
@@ -29,7 +29,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Ezjsonm backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-ezxmlm/default.nix b/pkgs/development/ocaml-modules/decoders-ezxmlm/default.nix
index e6c4f567d0b3..b663c813499d 100644
--- a/pkgs/development/ocaml-modules/decoders-ezxmlm/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-ezxmlm/default.nix
@@ -27,7 +27,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Ezxmlm backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-jsonaf/default.nix b/pkgs/development/ocaml-modules/decoders-jsonaf/default.nix
index a7dacffc8464..742749cf1d76 100644
--- a/pkgs/development/ocaml-modules/decoders-jsonaf/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-jsonaf/default.nix
@@ -29,7 +29,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Jsonaf backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-jsonm/default.nix b/pkgs/development/ocaml-modules/decoders-jsonm/default.nix
index 031ff6796c45..c0445f732c8a 100644
--- a/pkgs/development/ocaml-modules/decoders-jsonm/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-jsonm/default.nix
@@ -29,7 +29,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Jsonm backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-msgpck/default.nix b/pkgs/development/ocaml-modules/decoders-msgpck/default.nix
index 14e2fcf3d544..536dc7564603 100644
--- a/pkgs/development/ocaml-modules/decoders-msgpck/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-msgpck/default.nix
@@ -29,7 +29,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Msgpck backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-sexplib/default.nix b/pkgs/development/ocaml-modules/decoders-sexplib/default.nix
index d2ca0652cfb3..9a22691408ce 100644
--- a/pkgs/development/ocaml-modules/decoders-sexplib/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-sexplib/default.nix
@@ -31,7 +31,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "sexplib backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders-yojson/default.nix b/pkgs/development/ocaml-modules/decoders-yojson/default.nix
index 0a6bd35ce951..78bcdeaade95 100644
--- a/pkgs/development/ocaml-modules/decoders-yojson/default.nix
+++ b/pkgs/development/ocaml-modules/decoders-yojson/default.nix
@@ -29,7 +29,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Yojson backend for decoders";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };
diff --git a/pkgs/development/ocaml-modules/decoders/default.nix b/pkgs/development/ocaml-modules/decoders/default.nix
index c7ec127e4e92..bbdbcfde4e7a 100644
--- a/pkgs/development/ocaml-modules/decoders/default.nix
+++ b/pkgs/development/ocaml-modules/decoders/default.nix
@@ -24,7 +24,7 @@ buildDunePackage (finalAttrs: {
   meta = {
     description = "Elm-inspired decoders for Ocaml";
     homepage = "https://github.com/mattjbray/ocaml-decoders";
-    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/${finalAttrs.version}/CHANGES.md";
+    changelog = "https://github.com/mattjbray/ocaml-decoders/blob/v${finalAttrs.version}/CHANGES.md";
     license = lib.licenses.isc;
     maintainers = with lib.maintainers; [ infinidoge ];
   };