diff --git a/.emmyrc.json b/.emmyrc.json
index 8a7e8f63a..28b1466af 100644
--- a/.emmyrc.json
+++ b/.emmyrc.json
@@ -5,7 +5,8 @@
   },
   "diagnostics" : {
     "disable" : [
-      "unnecessary-if"
+      "unnecessary-if",
+      "invert-if"
     ],
     "enables": [
       "iter-variable-reassign",
diff --git a/Makefile b/Makefile
index de25c2535..c01c79eef 100644
--- a/Makefile
+++ b/Makefile
@@ -71,7 +71,7 @@ STYLUA_PLATFORM_MACOS := macos-aarch64
 STYLUA_PLATFORM_LINUX := linux-x86_64
 STYLUA_PLATFORM := $(STYLUA_PLATFORM_$(UNAME))
 
-STYLUA_VERSION := v2.0.2
+STYLUA_VERSION := v2.3.1
 STYLUA_ZIP := stylua-$(STYLUA_PLATFORM).zip
 STYLUA_URL_BASE := https://github.com/JohnnyMorganz/StyLua/releases/download
 STYLUA_URL := $(STYLUA_URL_BASE)/$(STYLUA_VERSION)/$(STYLUA_ZIP)
@@ -107,7 +107,7 @@ else
     EMMYLUA_ARCH ?= x64
 endif
 
-EMMYLUA_REF := 0.19.0
+EMMYLUA_REF := 0.20.0
 EMMYLUA_OS ?= $(shell uname -s | tr '[:upper:]' '[:lower:]')
 
 EMMYLUA_RELEASE_URL_BASE := https://github.com/EmmyLuaLs/emmylua-analyzer-rust/releases/download/$(EMMYLUA_REF)
diff --git a/lua/gitsigns/debug/log.lua b/lua/gitsigns/debug/log.lua
index 05c7a43ee..12a4e0dc2 100644
--- a/lua/gitsigns/debug/log.lua
+++ b/lua/gitsigns/debug/log.lua
@@ -42,7 +42,7 @@ local function getvarvalue(name, lvl)
   end
 
   -- try upvalues
-  local func = debug.getinfo(lvl).func
+  local func = assert(debug.getinfo(lvl)).func
   i = 1
   while true do
     local n, v = debug.getupvalue(func, i)