diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25b08ff..056dd72 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Forge Recommended Versioning](https://mcforge.readthedocs.io/en/latest/conventions/versioning/).
 
+## [1.20.4-3.1.2.1] - 2024-06-04
+### Fixed
+- fixed version checking at mod loader startup for Roughly Enough Items (all loaders)
+
 ## [1.20.4-3.1.2.0] - 2024-06-04
 ### Added
 - added Roughly Enough Items (REI) support (version 14.1.727) (all loaders)
diff --git a/fabric/build.gradle b/fabric/build.gradle
index 9760d92..a42ef1b 100644
--- a/fabric/build.gradle
+++ b/fabric/build.gradle
@@ -31,7 +31,7 @@ dependencies {
 
     modCompileOnlyApi("me.shedaniel:RoughlyEnoughItems-api-fabric:$rei_version")
     modRuntimeOnly "me.shedaniel:RoughlyEnoughItems-fabric:$rei_version"
-    modImplementation "dev.architectury:architectury-forge:$architectury_version"
+    modImplementation "dev.architectury:architectury-fabric:$architectury_version"
 
     implementation group: 'com.google.code.findbugs', name: 'jsr305', version: '3.0.1'
     compileOnly project(":common")
diff --git a/fabric/src/main/resources/fabric.mod.json b/fabric/src/main/resources/fabric.mod.json
index 862e590..9d3c9d0 100644
--- a/fabric/src/main/resources/fabric.mod.json
+++ b/fabric/src/main/resources/fabric.mod.json
@@ -41,6 +41,7 @@
   },
   "recommends": {
     "modmenu": ">=${mod_menu_version}",
-    "jei": ">=${jei_version}"
+    "jei": ">=${jei_version}",
+    "roughlyenoughitems": ">=${rei_version}"
   }
 }
diff --git a/forge/src/main/resources/META-INF/mods.toml b/forge/src/main/resources/META-INF/mods.toml
index c41d43d..1b175d4 100644
--- a/forge/src/main/resources/META-INF/mods.toml
+++ b/forge/src/main/resources/META-INF/mods.toml
@@ -28,4 +28,11 @@ mandatory=false
 versionRange="${jei_version_range}"
 referralUrl="https://github.com/mezz/JustEnoughItems"
 ordering="NONE"
+side="BOTH"
+[[dependencies.${mod_id}]]
+modId="roughlyenoughitems"
+mandatory=false
+versionRange="${rei_version_range}"
+referralUrl="https://github.com/shedaniel/RoughlyEnoughItems"
+ordering="NONE"
 side="BOTH"
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index 691a2fc..5c7b5bd 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,7 +4,7 @@
 
 # Project
 group=de.cech12.solarcooker
-mod_version=3.1.2.0
+mod_version=3.1.2.1
 mod_id=solarcooker
 mod_name=Solar Cooker
 mod_author=Cech12
diff --git a/neoforge/src/main/resources/META-INF/mods.toml b/neoforge/src/main/resources/META-INF/mods.toml
index f10c2e9..05e6da5 100644
--- a/neoforge/src/main/resources/META-INF/mods.toml
+++ b/neoforge/src/main/resources/META-INF/mods.toml
@@ -30,6 +30,13 @@ referralUrl="https://github.com/mezz/JustEnoughItems"
 ordering="NONE"
 side="BOTH"
 [[dependencies.${mod_id}]]
+modId="roughlyenoughitems"
+type="optional"
+versionRange="${rei_version_range}"
+referralUrl="https://github.com/shedaniel/RoughlyEnoughItems"
+ordering="NONE"
+side="BOTH"
+[[dependencies.${mod_id}]]
 modId="theoneprobe"
 type="optional"
 versionRange="${top_version_range}"