diff --git a/build_forge.gradle b/build_forge.gradle
index 4be10a27a6..2dc5af5e7d 100644
--- a/build_forge.gradle
+++ b/build_forge.gradle
@@ -985,6 +985,15 @@ tasks.register('genAllData') {
     dependsOn 'forge_data', 'forge_test_data'
 }
 
+tasks.named('processResources', ProcessResources) {
+    final Map<String, String> replaceProperties = Map.of('forge_version', (String) version)
+    inputs.properties replaceProperties
+
+    filesMatching(['META-INF/mods.toml']) {
+        expand replaceProperties + [project: project]
+    }
+}
+
 if (project.hasProperty('UPDATE_MAPPINGS')) {
     extractRangeMap {
         sources.from sourceSets.test.java.srcDirs
diff --git a/fmlloader/src/main/java/net/minecraftforge/fml/loading/StringSubstitutor.java b/fmlloader/src/main/java/net/minecraftforge/fml/loading/StringSubstitutor.java
deleted file mode 100644
index 21c3e625f8..0000000000
--- a/fmlloader/src/main/java/net/minecraftforge/fml/loading/StringSubstitutor.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading;
-
-import net.minecraftforge.fml.loading.moddiscovery.ModFile;
-
-import java.util.Map;
-
-import org.apache.commons.lang3.text.StrLookup;
-import org.apache.commons.lang3.text.StrSubstitutor;
-
-@SuppressWarnings("deprecation")
-public class StringSubstitutor {
-    private static final Map<String, String> GLOBALS = Map.of(
-        "mcVersion", FMLLoader.versionInfo().mcVersion(),
-        "forgeVersion", FMLLoader.versionInfo().forgeVersion()
-    );
-
-    public static String replace(final String in, final ModFile file) {
-        return new StrSubstitutor(getStringLookup(file)).replace(in);
-    }
-
-    private static StrLookup<String> getStringLookup(final ModFile file) {
-        return new StrLookup<>() {
-            @Override
-            public String lookup(String key) {
-                var parts = key.split("\\.");
-                if (parts.length == 1)
-                    return key;
-                var pfx = parts[0];
-
-                if ("global".equals(pfx))
-                    return GLOBALS.get(parts[1]);
-                else if ("file".equals(pfx) && file != null)
-                    return String.valueOf(file.getSubstitutionMap().get().get(parts[1]));
-
-                return key;
-            }
-        };
-    }
-}
diff --git a/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFile.java b/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFile.java
index 6869e1d121..05201fef95 100644
--- a/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFile.java
+++ b/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFile.java
@@ -5,7 +5,6 @@
 
 package net.minecraftforge.fml.loading.moddiscovery;
 
-import com.google.common.collect.ImmutableMap;
 import com.mojang.logging.LogUtils;
 import cpw.mods.jarhandling.SecureJar;
 import net.minecraftforge.fml.loading.FMLLoader;
@@ -39,7 +38,6 @@ import java.util.jar.Manifest;
 public class ModFile implements IModFile {
     private static final Logger LOGGER = LogUtils.getLogger();
     private final String jarVersion;
-    private Map<String, Object> fileProperties;
     private List<IModLanguageProvider> loaders;
     private Throwable scanError;
     private final SecureJar jar;
@@ -69,9 +67,10 @@ public class ModFile implements IModFile {
     }
 
     @Override
-    public Supplier<Map<String,Object>> getSubstitutionMap() {
-        return () -> ImmutableMap.<String,Object>builder().put("jarVersion", jarVersion).putAll(fileProperties).build();
+    public Supplier<Map<String, Object>> getSubstitutionMap() {
+        return Map::of;
     }
+
     @Override
     public Type getType() {
         return modFileType;
@@ -151,7 +150,7 @@ public class ModFile implements IModFile {
     }
 
     public void setFileProperties(Map<String, Object> fileProperties) {
-        this.fileProperties = fileProperties;
+        LOGGER.warn(LogMarkers.LOADING, "Setting file properties for the purposes of runtime mods.toml string substitution is no longer supported.");
     }
 
     @Override
diff --git a/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFileInfo.java b/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFileInfo.java
index f6ea9a2331..8d9488dfad 100644
--- a/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFileInfo.java
+++ b/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFileInfo.java
@@ -101,7 +101,6 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
             this.properties = config.<Map<String, Object>>getConfigElement("properties")
                     .orElse(Collections.emptyMap());
         }
-        this.modFile.setFileProperties(this.properties);
 
         final List<? extends IConfigurable> modConfigs = config.getConfigList("mods");
         if (modConfigs == null || modConfigs.isEmpty())
diff --git a/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModInfo.java b/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModInfo.java
index f41741e423..5490093e6e 100644
--- a/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModInfo.java
+++ b/fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModInfo.java
@@ -6,7 +6,6 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import com.mojang.logging.LogUtils;
-import net.minecraftforge.fml.loading.StringSubstitutor;
 import net.minecraftforge.fml.loading.StringUtils;
 import net.minecraftforge.forgespi.language.IConfigurable;
 import net.minecraftforge.forgespi.language.IModInfo;
@@ -74,7 +73,6 @@ public record ModInfo(
         }
 
         ArtifactVersion version = config.<String>getConfigElement("version")
-                .map(s -> StringSubstitutor.replace(s, owningFile.getFile()))
                 .map(DefaultArtifactVersion::new)
                 .orElse(DEFAULT_VERSION);
 
diff --git a/src/main/resources/META-INF/mods.toml b/src/main/resources/META-INF/mods.toml
index d863d55ca1..1f6747ac20 100644
--- a/src/main/resources/META-INF/mods.toml
+++ b/src/main/resources/META-INF/mods.toml
@@ -6,7 +6,7 @@ license="LGPL v2.1"
 
 [[mods]]
 modId="forge"
-version="${global.forgeVersion}"
+version="${forge_version}"
 updateJSONURL="https://files.minecraftforge.net/net/minecraftforge/forge/promotions_slim.json"
 displayURL="https://minecraftforge.net/"
 displayName="Forge"