diff --git a/src/setup-ghidra-source.cmake b/src/setup-ghidra-source.cmake
index 1f0c0c5ce..418770053 100644
--- a/src/setup-ghidra-source.cmake
+++ b/src/setup-ghidra-source.cmake
@@ -47,9 +47,9 @@ set(ghidra_patches
 if("${sleigh_RELEASE_TYPE}" STREQUAL "HEAD")
   # TODO: Try to remember to look at Ghidra/application.properties
   # TODO: CMake only likes numeric characters in the version string....
-  set(ghidra_head_version "11.2")
+  set(ghidra_head_version "11.3")
   set(ghidra_version "${ghidra_head_version}")
-  set(ghidra_head_git_tag "3ec2dfb2011579933c43177e4d38d204ff248b7d")
+  set(ghidra_head_git_tag "990479f79b6b3b0245382da58f313e11f69e3632")
   set(ghidra_git_tag "${ghidra_head_git_tag}")
   set(ghidra_shallow FALSE)
   set(ghidra_patches
diff --git a/src/spec_files_HEAD.cmake b/src/spec_files_HEAD.cmake
index c5e586ac9..24ec2df38 100644
--- a/src/spec_files_HEAD.cmake
+++ b/src/spec_files_HEAD.cmake
@@ -63,6 +63,8 @@ set(spec_file_list
   "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/Loongarch/data/languages/loongarch32_f64.slaspec"
   "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/Loongarch/data/languages/loongarch64_f32.slaspec"
   "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/Loongarch/data/languages/loongarch64_f64.slaspec"
+  "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/M16C/data/languages/M16C_60.slaspec"
+  "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/M16C/data/languages/M16C_80.slaspec"
   "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/M8C/data/languages/m8c.slaspec"
   "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/MC6800/data/languages/6805.slaspec"
   "${ghidrasource_SOURCE_DIR}/Ghidra/Processors/MC6800/data/languages/6809.slaspec"