diff --git a/build.gradle b/build.gradle
index fa0decaf..a64e6ffd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -38,7 +38,7 @@ repositories {
 }
 
 dependencies {
-    compile "vazkii.patchouli:Patchouli:1.0-18.92"
+    compile "vazkii.patchouli:Patchouli:1.0-18.93"
 
     deobfCompile "mezz.jei:jei_1.12.2:4.14.4.267"
     deobfCompile "com.azanor.baubles:Baubles:1.12-1.5.2"
diff --git a/src/main/java/de/ellpeck/naturesaura/compat/Compat.java b/src/main/java/de/ellpeck/naturesaura/compat/Compat.java
index 8c805303..55b56fa1 100644
--- a/src/main/java/de/ellpeck/naturesaura/compat/Compat.java
+++ b/src/main/java/de/ellpeck/naturesaura/compat/Compat.java
@@ -4,6 +4,8 @@ import de.ellpeck.naturesaura.compat.crafttweaker.CraftTweakerCompat;
 import de.ellpeck.naturesaura.compat.patchouli.PatchouliCompat;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.Loader;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
 
 public final class Compat {
 
@@ -22,6 +24,10 @@ public final class Compat {
         PatchouliCompat.preInit();
     }
 
+    public static void preInitClient() {
+        PatchouliCompat.preInitClient();
+    }
+
     public static void postInit() {
         if (craftTweaker && mtLib)
             CraftTweakerCompat.postInit();
diff --git a/src/main/java/de/ellpeck/naturesaura/compat/patchouli/PatchouliCompat.java b/src/main/java/de/ellpeck/naturesaura/compat/patchouli/PatchouliCompat.java
index 6f2ecdd3..ef937592 100644
--- a/src/main/java/de/ellpeck/naturesaura/compat/patchouli/PatchouliCompat.java
+++ b/src/main/java/de/ellpeck/naturesaura/compat/patchouli/PatchouliCompat.java
@@ -13,9 +13,12 @@ import net.minecraft.client.renderer.RenderHelper;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.text.TextFormatting;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.client.config.GuiUtils;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
+import vazkii.patchouli.api.BookDrawScreenEvent;
 import vazkii.patchouli.api.PatchouliAPI;
 
 import java.time.LocalDateTime;
@@ -30,59 +33,57 @@ public final class PatchouliCompat {
         PatchouliAPI.instance.setConfigFlag(NaturesAura.MOD_ID + ":rf_converter", ModConfig.enabledFeatures.rfConverter);
     }
 
+    public static void preInitClient() {
+        MinecraftForge.EVENT_BUS.register(new PatchouliCompat());
+    }
+
+    @SubscribeEvent
     @SideOnly(Side.CLIENT)
-    public static void onGuiRender(GuiScreen gui, int mouseX, int mouseY) {
-        boolean display = false;
-        try {
-            ResourceLocation open = PatchouliAPI.instance.getOpenBookGui();
-            display = open != null && open.equals(BOOK);
-        } catch (Throwable ignored) {
-            // TODO remove this once Patchouli update is out long enough
+    public void onBookDraw(BookDrawScreenEvent event) {
+        if (event.book == null || !event.book.equals(BOOK))
+            return;
+        LocalDateTime now = LocalDateTime.now();
+        if (now.getMonth() == Month.MAY && now.getDayOfMonth() == 21) {
+            int x = event.gui.width / 2 + 272 / 2 - 16;
+            int y = event.gui.height / 2 - 180 / 2 - 26;
+
+            RenderHelper.disableStandardItemLighting();
+            GlStateManager.color(1, 1, 1, 1);
+            event.gui.mc.getTextureManager().bindTexture(ClientEvents.BOOK_GUI);
+            Gui.drawModalRectWithCustomSizedTexture(x, y, 469, 0, 43, 42, 512, 256);
+
+            if (event.mouseX >= x && event.mouseY >= y && event.mouseX < x + 43 && event.mouseY < y + 42)
+                GuiUtils.drawHoveringText(
+                        Collections.singletonList(TextFormatting.GOLD + "It's the author Ellpeck's birthday!"),
+                        event.mouseX, event.mouseY, event.gui.width, event.gui.height, 0, event.gui.mc.fontRenderer);
         }
-        if (display) {
-            LocalDateTime now = LocalDateTime.now();
-            if (now.getMonth() == Month.MAY && now.getDayOfMonth() == 21) {
-                int x = gui.width / 2 + 272 / 2 - 16;
-                int y = gui.height / 2 - 180 / 2 - 26;
 
-                RenderHelper.disableStandardItemLighting();
-                GlStateManager.color(1, 1, 1, 1);
-                gui.mc.getTextureManager().bindTexture(ClientEvents.BOOK_GUI);
-                Gui.drawModalRectWithCustomSizedTexture(x, y, 469, 0, 43, 42, 512, 256);
+        String name = event.gui.mc.player.getName();
+        FancyInfo info = SupporterFancyHandler.FANCY_INFOS.get(name);
+        if (info != null) {
+            int x = event.gui.width / 2 - 272 / 2 + 20;
+            int y = event.gui.height / 2 + 180 / 2;
 
-                if (mouseX >= x && mouseY >= y && mouseX < x + 43 && mouseY < y + 42)
-                    GuiUtils.drawHoveringText(
-                            Collections.singletonList(TextFormatting.GOLD + "It's the author Ellpeck's birthday!"),
-                            mouseX, mouseY, gui.width, gui.height, 0, gui.mc.fontRenderer);
+            RenderHelper.disableStandardItemLighting();
+            GlStateManager.color(1, 1, 1, 1);
+            event.gui.mc.getTextureManager().bindTexture(ClientEvents.BOOK_GUI);
+
+            Gui.drawModalRectWithCustomSizedTexture(x, y, 496, 44, 16, 18, 512, 256);
+            if (info.tier == 1) {
+                Gui.drawModalRectWithCustomSizedTexture(x, y, 496 - 16, 44, 16, 18, 512, 256);
+            } else {
+                float r = ((info.color >> 16) & 255) / 255F;
+                float g = ((info.color >> 8) & 255) / 255F;
+                float b = (info.color & 255) / 255F;
+                GlStateManager.color(r, g, b);
+                Gui.drawModalRectWithCustomSizedTexture(x, y, 496 - 32, 44, 16, 18, 512, 256);
             }
 
-            String name = gui.mc.player.getName();
-            FancyInfo info = SupporterFancyHandler.FANCY_INFOS.get(name);
-            if (info != null) {
-                int x = gui.width / 2 - 272 / 2 + 20;
-                int y = gui.height / 2 + 180 / 2;
+            if (event.mouseX >= x && event.mouseY >= y && event.mouseX < x + 16 && event.mouseY < y + 18)
+                GuiUtils.drawHoveringText(
+                        Collections.singletonList(TextFormatting.YELLOW + "Thanks for your support, " + name + "!"),
+                        event.mouseX, event.mouseY, event.gui.width, event.gui.height, 0, event.gui.mc.fontRenderer);
 
-                RenderHelper.disableStandardItemLighting();
-                GlStateManager.color(1, 1, 1, 1);
-                gui.mc.getTextureManager().bindTexture(ClientEvents.BOOK_GUI);
-
-                Gui.drawModalRectWithCustomSizedTexture(x, y, 496, 44, 16, 18, 512, 256);
-                if (info.tier == 1) {
-                    Gui.drawModalRectWithCustomSizedTexture(x, y, 496 - 16, 44, 16, 18, 512, 256);
-                } else {
-                    float r = ((info.color >> 16) & 255) / 255F;
-                    float g = ((info.color >> 8) & 255) / 255F;
-                    float b = (info.color & 255) / 255F;
-                    GlStateManager.color(r, g, b);
-                    Gui.drawModalRectWithCustomSizedTexture(x, y, 496 - 32, 44, 16, 18, 512, 256);
-                }
-
-                if (mouseX >= x && mouseY >= y && mouseX < x + 16 && mouseY < y + 18)
-                    GuiUtils.drawHoveringText(
-                            Collections.singletonList(TextFormatting.YELLOW + "Thanks for your support, " + name + "!"),
-                            mouseX, mouseY, gui.width, gui.height, 0, gui.mc.fontRenderer);
-
-            }
         }
     }
 
diff --git a/src/main/java/de/ellpeck/naturesaura/events/ClientEvents.java b/src/main/java/de/ellpeck/naturesaura/events/ClientEvents.java
index 06e2a11a..f1f215fd 100644
--- a/src/main/java/de/ellpeck/naturesaura/events/ClientEvents.java
+++ b/src/main/java/de/ellpeck/naturesaura/events/ClientEvents.java
@@ -102,11 +102,6 @@ public class ClientEvents {
         mc.profiler.endSection();
     }
 
-    @SubscribeEvent
-    public void onGuiRender(GuiScreenEvent.DrawScreenEvent.Post event) {
-        PatchouliCompat.onGuiRender(event.getGui(), event.getMouseX(), event.getMouseY());
-    }
-
     @SubscribeEvent
     public void onRenderLast(RenderWorldLastEvent event) {
         Minecraft mc = Minecraft.getMinecraft();
diff --git a/src/main/java/de/ellpeck/naturesaura/proxy/ClientProxy.java b/src/main/java/de/ellpeck/naturesaura/proxy/ClientProxy.java
index adfe1b3a..32b25d27 100644
--- a/src/main/java/de/ellpeck/naturesaura/proxy/ClientProxy.java
+++ b/src/main/java/de/ellpeck/naturesaura/proxy/ClientProxy.java
@@ -37,6 +37,7 @@ public class ClientProxy implements IProxy {
     @Override
     public void preInit(FMLPreInitializationEvent event) {
         MinecraftForge.EVENT_BUS.register(new ClientEvents());
+        Compat.preInitClient();
     }
 
     @Override