diff --git a/externals/coda-oss/.github/workflows/build_unittest.yml b/externals/coda-oss/.github/workflows/build_unittest.yml
index 3c7b3a94e..3e0cb263a 100644
--- a/externals/coda-oss/.github/workflows/build_unittest.yml
+++ b/externals/coda-oss/.github/workflows/build_unittest.yml
@@ -140,7 +140,7 @@ jobs:
- name: configure
run: |
mkdir out && cd out
- cmake .. -DENABLE_PYTHON=OFF -DENABLE_ASAN=ON -DENABLE_${{ matrix.avx }}=ON
+ cmake .. -DENABLE_PYTHON=OFF -DENABLE_${{ matrix.avx }}=ON
- name: build
run: |
cd out
diff --git a/externals/coda-oss/ReleaseNotes.md b/externals/coda-oss/ReleaseNotes.md
index bd37823dd..997db45b3 100644
--- a/externals/coda-oss/ReleaseNotes.md
+++ b/externals/coda-oss/ReleaseNotes.md
@@ -1,7 +1,13 @@
# coda-oss Release Notes
-## [Release 202?-??-??](https://github.com/mdaus/coda-oss/releases/tag/202?-??-??)
+## [Release 2024-03-18](https://github.com/mdaus/coda-oss/releases/tag/2024-03-18)
* Update to [HighFive 2.8.0](https://github.com/BlueBrain/HighFive/releases/tag/v2.8.0).
+* Use lookup tables for converting between character encodings and upper/lower-case.
+* [`sys::Transform(std::execution)`](https://en.cppreference.com/w/cpp/algorithm/execution_policy_tag_t) for C++14.
+* Infrastructure to support SIMD processing.
+* Simple/incomplete [`std::mdspan`](https://en.cppreference.com/w/cpp/container/mdspan) implementation.
+* Support for building as a shared library/DLL, disabled by default.
+* Create/destroy Xerces just once per process.
## [Release 2023-10-23](https://github.com/mdaus/coda-oss/releases/tag/2023-10-23)
* Tweaked **.gitattributes**.
diff --git a/externals/coda-oss/modules/c++/config/include/config/Version.h b/externals/coda-oss/modules/c++/config/include/config/Version.h
index d14635575..e444b5a80 100644
--- a/externals/coda-oss/modules/c++/config/include/config/Version.h
+++ b/externals/coda-oss/modules/c++/config/include/config/Version.h
@@ -42,12 +42,12 @@ static_assert(CODA_OSS_MAKE_VERSION_MMPB(9999, 9999, 9999, 9999) <= UINT64_MAX,
// Do this ala C++ ... we don't currently have major/minor/patch
//#define CODA_OSS_VERSION_ 20210910L // c.f. __cplusplus
-#define CODA_OSS_VERSION_ 2023 ## 0010 ## 0023 ## 0000 ## L
+#define CODA_OSS_VERSION_ 2024 ## 0003 ## 0018 ## 0000 ## L
// Use the same macros other projects might want to use; overkill for us.
-#define CODA_OSS_VERSION_MAJOR 2023
-#define CODA_OSS_VERSION_MINOR 10
-#define CODA_OSS_VERSION_PATCH 23 // a.k.a. "point," but too similar to "patch."
+#define CODA_OSS_VERSION_MAJOR 2024
+#define CODA_OSS_VERSION_MINOR 3
+#define CODA_OSS_VERSION_PATCH 18 // a.k.a. "point," but too similar to "patch."
#define CODA_OSS_VERSION_BUILD 0 // a.k.a. "patch," but too similar to "point."
#define CODA_OSS_VERSION CODA_OSS_MAKE_VERSION_MMPB(CODA_OSS_VERSION_MAJOR, CODA_OSS_VERSION_MINOR, CODA_OSS_VERSION_PATCH, CODA_OSS_VERSION_BUILD)
diff --git a/externals/nitro/ReleaseNotes.md b/externals/nitro/ReleaseNotes.md
index 7111a792e..c2a39cf7e 100644
--- a/externals/nitro/ReleaseNotes.md
+++ b/externals/nitro/ReleaseNotes.md
@@ -1,5 +1,11 @@
# NITRO (NITF i/o) Release Notes
+## [Version 2.11.6](https://github.com/mdaus/nitro/releases/tag/NITRO-2.11.6); March 18, 2024
+* [coda-oss](https://github.com/mdaus/coda-oss) release [2024-03-18](https://github.com/mdaus/coda-oss/releases/tag/2024-03-18)
+* TREs can now be statically ["pre-loaded"](https://github.com/mdaus/nitro/pull/601), no need to set NITF_PLUGIN_PATH.
+* Be sure TRE field padding is done properly.
+* Allow shared-libraries (DLLs) to be build; disabled by default.
+
## [Version 2.11.5](https://github.com/mdaus/nitro/releases/tag/NITRO-2.11.5); October 23, 2023
* [coda-oss](https://github.com/mdaus/coda-oss) release [2023-10-23](https://github.com/mdaus/coda-oss/releases/tag/2023-10-23)
* Fix some ASAN diagnostics, still more to do.
diff --git a/externals/nitro/UnitTest/UnitTest.vcxproj b/externals/nitro/UnitTest/UnitTest.vcxproj
index 547527c2a..44bcf0351 100644
--- a/externals/nitro/UnitTest/UnitTest.vcxproj
+++ b/externals/nitro/UnitTest/UnitTest.vcxproj
@@ -93,6 +93,7 @@
true
true
true
+ Speed
Windows
diff --git a/externals/nitro/modules/c++/nitf/include/nitf/Version.hpp b/externals/nitro/modules/c++/nitf/include/nitf/Version.hpp
index 5532fab46..8893070df 100644
--- a/externals/nitro/modules/c++/nitf/include/nitf/Version.hpp
+++ b/externals/nitro/modules/c++/nitf/include/nitf/Version.hpp
@@ -39,9 +39,10 @@
// 2.11.3 June 5, 2023
// 2.11.4 August 18, 2023
// 2.11.5 October 23, 2023
+ // 2.11.6 March 18, 2024
#define NITF_VERSION_MAJOR 2
#define NITF_VERSION_MINOR 11
-#define NITF_VERSION_PATCH 5 // a.k.a. "point," but too similar to "patch."
+#define NITF_VERSION_PATCH 6 // a.k.a. "point," but too similar to "patch."
#define NITF_VERSION_BUILD 0 // a.k.a. "patch," but too similar to "point."
#define NITF_VERSION CODA_OSS_MAKE_VERSION_MMPB(NITF_VERSION_MAJOR, NITF_VERSION_MINOR, NITF_VERSION_PATCH, NITF_VERSION_BUILD)
diff --git a/externals/nitro/modules/c/j2k/J2KCompress.vcxproj b/externals/nitro/modules/c/j2k/J2KCompress.vcxproj
index 7a6a02369..c6466ca88 100644
--- a/externals/nitro/modules/c/j2k/J2KCompress.vcxproj
+++ b/externals/nitro/modules/c/j2k/J2KCompress.vcxproj
@@ -100,6 +100,7 @@
Guard
true
AdvancedVectorExtensions2
+ Speed
diff --git a/externals/nitro/modules/c/j2k/J2KDecompress.vcxproj b/externals/nitro/modules/c/j2k/J2KDecompress.vcxproj
index 3fc0690be..a3abea9e0 100644
--- a/externals/nitro/modules/c/j2k/J2KDecompress.vcxproj
+++ b/externals/nitro/modules/c/j2k/J2KDecompress.vcxproj
@@ -100,6 +100,7 @@
Guard
true
AdvancedVectorExtensions2
+ Speed
diff --git a/externals/nitro/modules/c/nitf/TEST_DES.vcxproj b/externals/nitro/modules/c/nitf/TEST_DES.vcxproj
index 1457b9fd3..893726fa7 100644
--- a/externals/nitro/modules/c/nitf/TEST_DES.vcxproj
+++ b/externals/nitro/modules/c/nitf/TEST_DES.vcxproj
@@ -100,6 +100,7 @@
Guard
true
AdvancedVectorExtensions2
+ Speed
diff --git a/externals/nitro/modules/c/nrt/include/nrt/Version.h b/externals/nitro/modules/c/nrt/include/nrt/Version.h
index 46c83f80c..f53a42604 100644
--- a/externals/nitro/modules/c/nrt/include/nrt/Version.h
+++ b/externals/nitro/modules/c/nrt/include/nrt/Version.h
@@ -1,5 +1,5 @@
#pragma once
#if !defined(NRT_LIB_VERSION)
-#define NRT_LIB_VERSION "2.11.5"
+#define NRT_LIB_VERSION "2.11.6"
#endif