diff --git a/build-data/reobf-mappings-patch.tiny b/build-data/reobf-mappings-patch.tiny
new file mode 100644
index 000000000..f12c799ff
--- /dev/null
+++ b/build-data/reobf-mappings-patch.tiny
@@ -0,0 +1,15 @@
+# We would like for paperweight to generate 100% perfect reobf mappings (and deobf mappings for that matter).
+# But unfortunately it's not quite there yet - and it may be some time before that happens. Generating perfect mappings
+# from Spigot's mappings is extremely difficult due to Spigot's bad tooling and bad mappings. To add insult to injury
+# we remap Spigot's _source code_ which is a lot more complex and error-prone than bytecode remapping. So with all that
+# said, this file exists to help fill in the gap.
+#
+# We will continue to improve paperweight and will work on fixing these issues so they don't come up in the first place,
+# but these mappings exist to prevent these issues from holding everything else in Paper up while we work through all
+# of these issues. Due to the complex nature of mappings generation and the debugging difficulty involved it may take
+# a significant amount of time for us to track down every possible issue, so this file will likely be around and in
+# use - at least in some capacity - for a long time.
+
+tiny	2	0	mojang+yarn	spigot
+c	net/minecraft/server/level/ServerLevel	net/minecraft/server/level/WorldServer
+	f	Lnet/minecraft/world/level/storage/PrimaryLevelData;	serverLevelData	E
diff --git a/build.gradle.kts b/build.gradle.kts
index 521f94c60..49acd816e 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,7 @@
 plugins {
     java
     id("com.github.johnrengelman.shadow") version "7.0.0" apply false
-    id("io.papermc.paperweight.core") version "1.1.4"
+    id("io.papermc.paperweight.core") version "1.1.5"
 }
 
 subprojects {
@@ -76,18 +76,19 @@ paperweight {
     serverProject.set(project(":Paper-Server"))
 
     paper {
-        spigotApiPatchDir.set(file("patches/api"))
-        spigotServerPatchDir.set(file("patches/server"))
+        spigotApiPatchDir.set(layout.projectDirectory.dir("patches/api"))
+        spigotServerPatchDir.set(layout.projectDirectory.dir("patches/server"))
 
-        mappingsPatch.set(file("build-data/mappings-patch.tiny"))
+        mappingsPatch.set(layout.projectDirectory.file("build-data/mappings-patch.tiny"))
+        reobfMappingsPatch.set(layout.projectDirectory.file("build-data/reobf-mappings-patch.tiny"))
 
-        additionalSpigotMemberMappings.set(file("build-data/additional-spigot-member-mappings.csrg"))
-        craftBukkitPatchPatchesDir.set(file("build-data/craftbukkit-patch-patches"))
+        additionalSpigotMemberMappings.set(layout.projectDirectory.file("build-data/additional-spigot-member-mappings.csrg"))
+        craftBukkitPatchPatchesDir.set(layout.projectDirectory.dir("build-data/craftbukkit-patch-patches"))
     }
 }
 
 tasks.register("printMinecraftVersion") {
     doLast {
-        println(providers.gradleProperty("mcVersion").forUseAtConfigurationTime().get().trim())
+        println(providers.gradleProperty("mcVersion").get().trim())
     }
 }