diff --git a/src/setup-ghidra-source.cmake b/src/setup-ghidra-source.cmake
index 7ba9472..3a5fcea 100644
--- a/src/setup-ghidra-source.cmake
+++ b/src/setup-ghidra-source.cmake
@@ -55,7 +55,7 @@ if("${sleigh_RELEASE_TYPE}" STREQUAL "HEAD")
   # TODO: CMake only likes numeric characters in the version string....
   set(ghidra_head_version "12.2")
   set(ghidra_version "${ghidra_head_version}")
-  set(ghidra_head_git_tag "3d92a003fcd9a9949d78a172dc7295b95af12965")
+  set(ghidra_head_git_tag "94164bd6e90eef1ae6b771a5692c0ca53ea92b81")
   set(ghidra_git_tag "${ghidra_head_git_tag}")
   set(ghidra_shallow FALSE)
   set(ghidra_patches
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 38960a7..c254235 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -26,10 +26,11 @@ add_executable(sleigh_decomp_test
   "${library_root}/../unittests/testparamstore.cc"
 )
 
-# if(sleigh_RELEASE_IS_HEAD)
-#   target_sources(sleigh_decomp_test PRIVATE
-#   )
-# endif()
+if(sleigh_RELEASE_IS_HEAD)
+  target_sources(sleigh_decomp_test PRIVATE
+    "${library_root}/../unittests/testmultiprec.cc"
+  )
+endif()
 
 target_compile_features(sleigh_decomp_test PRIVATE cxx_std_11)
 target_include_directories(sleigh_decomp_test PRIVATE "${library_root}")