diff --git a/.gitignore b/.gitignore
index 5eea5e1..1751068 100644
--- a/.gitignore
+++ b/.gitignore
@@ -553,3 +553,6 @@ FodyWeavers.xsd
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
 replay_pid*
+
+# Automatically generated build properties
+**/build.properties
diff --git a/build.gradle b/build.gradle
index 0374557..930b63b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,6 +9,103 @@ plugins {
 version = "${project.mod_version}+mc${project.supported_minecraft_version}"
 group = project.maven_group
 
+def loadProperties() {
+    def versionPropertiesFolder = project.version_properties_folder
+    def defaultMinecraftVersion = project.default_minecraft_version
+    def minecraftVersions = fileTree(versionPropertiesFolder).files.name
+    def minecraftVersion = ""
+
+    for (int i = 0; i < minecraftVersions.size(); i++) {
+        // Remove the ".properties" at the end of the filename to get the versions
+        minecraftVersions[i] = minecraftVersions[i].replaceAll("\\.properties", "")
+    }
+
+    // Sort the version list so the list goes from oldest to newest
+    minecraftVersions.sort()
+
+    int minecraftVersionIndex = -1
+    println "Available Minecraft versions: ${minecraftVersions}"
+
+    if (hasProperty("minecraft_version_properties")) {
+        minecraftVersion = minecraft_version_properties
+        minecraftVersionIndex = minecraftVersions.indexOf(minecraftVersion)
+    }
+
+    if (minecraftVersionIndex == -1) {
+        println "minecraft_version_properties is unset or invalid! Defaulting to ${defaultMinecraftVersion}."
+        println "Tip: use -Pminecraft_version_properties=\"${defaultMinecraftVersion}\" as a command line argument to set minecraft_version_properties."
+
+        minecraftVersion = defaultMinecraftVersion
+        minecraftVersionIndex = minecraftVersions.indexOf(defaultMinecraftVersion)
+
+        assert minecraftVersionIndex != -1
+    }
+
+    println "Loading ${versionPropertiesFolder}/${minecraftVersion}.properties"
+    def props = new Properties()
+    props.load(new FileInputStream("${rootDir}/${versionPropertiesFolder}/${minecraftVersion}.properties"))
+
+    props.each { prop -> gradle.ext.set(prop.key, prop.value) }
+    gradle.ext.minecraft_versions = minecraftVersions
+}
+
+/**
+ * Creates the list of preprocessors to use.
+ *
+ * @param minecraftVersions Array of all Minecraft versions.
+ * @param minecraftVersionIndex Array index of the currently active Minecraft version.
+ */
+def writeManifoldPreprocessorDefinesToBuildProperties() {
+    def versionPropertiesFolder = project.version_properties_folder
+    def minecraftVersions = fileTree(versionPropertiesFolder).files.name
+
+    for (int i = 0; i < minecraftVersions.size(); i++) {
+        // Remove the ".properties" at the end of the filename to get the versions
+        minecraftVersions[i] = minecraftVersions[i].replaceAll("\\.properties", "")
+    }
+
+    // Sort the version list so the list goes from oldest to newest
+    minecraftVersions.sort()
+
+    def minecraftVersion = minecraft_version_properties
+    def minecraftVersionIndex = minecraftVersions.indexOf(minecraftVersion)
+    def manifoldMinecraftVersionPreprocessorList = new ArrayList<String>()
+
+    for (int i = 0; i < minecraftVersions.size(); i++) {
+        String minecraftVersionManifold = minecraftVersions[i].replace(".", "_").replace("-", "_TO_MC_")
+
+        if (minecraftVersionIndex == i) {
+            manifoldMinecraftVersionPreprocessorList.add("MC_" + minecraftVersionManifold)
+        } else {
+            manifoldMinecraftVersionPreprocessorList.add("# MC_" + minecraftVersionManifold)
+        }
+    }
+
+    StringBuilder sb = new StringBuilder()
+    // Add a warning to the top of the build.properties file
+    // The whitespace at the end is intentional
+    sb.append("""# This file contains the Minecraft version Manifold uses.
+# Please do not touch this file, as this is handled by the build script automatically.
+# If you're updating the mod to a new Minecraft version, add a new version.properties file to the version_properties_folder
+
+# suppress inspection "WrongPropertyKeyValueDelimiter" for whole file
+# suppress inspection "UnusedProperty" for whole file
+
+""")
+
+    // Build the Minecraft version preprocessors list
+    for (String manifoldMinecraftVersionPreprocessor : manifoldMinecraftVersionPreprocessorList) {
+        sb.append(manifoldMinecraftVersionPreprocessor)
+        sb.append("=\n")
+    }
+
+    // Write to build.properties
+    new File(projectDir, "build.properties").text = sb.toString()
+}
+
+loadProperties()
+writeManifoldPreprocessorDefinesToBuildProperties()
+
 repositories {
     // Add repositories to retrieve artifacts from in here.
     // You should only use this when depending on other mods because
@@ -33,9 +130,9 @@ repositories {
 
 dependencies {
     // To change the versions see the gradle.properties file
-    minecraft "com.mojang:minecraft:${project.minecraft_version}"
-    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
-    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
+    minecraft "com.mojang:minecraft:${gradle.ext.minecraft_version}"
+    mappings "net.fabricmc:yarn:${gradle.ext.yarn_mappings}:v2"
+    modImplementation "net.fabricmc:fabric-loader:${gradle.ext.loader_version}"
 
     // Manifold
     implementation 'systems.manifold:manifold-rt:2023.1.26'
diff --git a/build.properties b/build.properties
deleted file mode 100644
index f8e2d60..0000000
--- a/build.properties
+++ /dev/null
@@ -1,8 +0,0 @@
-# This file contains the Minecraft version Manifold uses.
-# Please do not push an update to this file to Git unless you're updating the mod to a new Minecraft version.
-
-# suppress inspection "WrongPropertyKeyValueDelimiter" for whole file
-# suppress inspection "UnusedProperty" for whole file
-
-#MC_1_19
-MC_1_20
diff --git a/gradle.properties b/gradle.properties
index c08cf42..b416c23 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,14 +1,18 @@
-# Done to increase the memory available to gradle.
+# Gradle settings
+# Increase memory available to Gradle, enable parallelism, and enable caching
 org.gradle.jvmargs=-Xmx1G
+org.gradle.parallel=true
+org.gradle.caching=true
 
-# Fabric Properties
-# check these on https://modmuss50.me/fabric.html
-minecraft_version=1.20.1
-yarn_mappings=1.20.1+build.10
-loader_version=0.14.12
-
-# Mod Properties
+# Mod properties
 mod_version=1.3.0
 maven_group=io.github.steveplays28
 archives_base_name=pathunderfencegates
+version_properties_folder=version_properties
+default_minecraft_version=1.20.1
 supported_minecraft_version=1.19.x-1.20.x
+
+# Minecraft version to compile/run
+# This loads the .properties file for this version, located in the version_properties_folder
+# Override this using -Pminecraft_version_properties=\"${defaultMinecraftVersion}\" as a command line argument
+minecraft_version_properties=1.20.1
diff --git a/src/main/java/io/github/steveplays28/pathunderfencegates/util/BlockStateUtil.java b/src/main/java/io/github/steveplays28/pathunderfencegates/util/BlockStateUtil.java
index d479475..57d5dd7 100644
--- a/src/main/java/io/github/steveplays28/pathunderfencegates/util/BlockStateUtil.java
+++ b/src/main/java/io/github/steveplays28/pathunderfencegates/util/BlockStateUtil.java
@@ -4,7 +4,7 @@
 import net.minecraft.block.enums.SlabType;
 import org.jetbrains.annotations.NotNull;
 
-#if MC_1_19
+#if MC_1_19_2
 import net.minecraft.tag.BlockTags;
 #else
 import net.minecraft.registry.tag.BlockTags;
@@ -13,11 +13,11 @@
 import static net.minecraft.block.SlabBlock.TYPE;
 
 public class BlockStateUtil {
-	@SuppressWarnings("deprecation")
+	#if MC_1_20_1 @SuppressWarnings("deprecation") #endif
 	public static boolean BlockAllowedAboveDirtPathBlock(@NotNull BlockState blockState) {
 		Block block = blockState.getBlock();
 
-		return #if MC_1_19 !blockState.getMaterial().isSolid() #else !blockState.isSolid() #endif || blockState.isAir() || blockState.isIn(
+		return #if MC_1_19_2 !blockState.getMaterial().isSolid() #else !blockState.isSolid() #endif || blockState.isAir() || blockState.isIn(
 				BlockTags.FENCE_GATES) || blockState.isIn(
 				BlockTags.TRAPDOORS) || block instanceof BellBlock || block instanceof WallSignBlock || block instanceof PaneBlock || (block instanceof SlabBlock && blockState.get(
 				TYPE).equals(SlabType.TOP));
diff --git a/version_properties/1.19.2.properties b/version_properties/1.19.2.properties
new file mode 100644
index 0000000..45924be
--- /dev/null
+++ b/version_properties/1.19.2.properties
@@ -0,0 +1,5 @@
+# Fabric properties
+# Check these on https://modmuss50.me/fabric.html
+minecraft_version=1.19.2
+yarn_mappings=1.19.2+build.28
+loader_version=0.14.12
diff --git a/version_properties/1.20.1.properties b/version_properties/1.20.1.properties
new file mode 100644
index 0000000..aa45d7e
--- /dev/null
+++ b/version_properties/1.20.1.properties
@@ -0,0 +1,5 @@
+# Fabric properties
+# Check these on https://modmuss50.me/fabric.html
+minecraft_version=1.20.1
+yarn_mappings=1.20.1+build.10
+loader_version=0.14.12