diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8471d14f..9fe8890f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## [10.17.5] - 2021-04-06
+
+### Zero-diff to previous release: YES for hydrostatic, NO for nonhydrostatic
+### Zero-diff to regridding: YES
+### Restart Changes: NO
+### History Changes: NO
+
+Major changes include:
+
+1. parallel_build.csh now accepts a `-hydrostatic` or `-nonhydrostatic` argument during building. If no argument is provided the model will build hydrostatically as before. Therefore, setup scripts were modified depending on what -DHYDROSTATIC option was supplied to CMake. If -DHYDROSTATIC=ON then it will assume the user wants to use hydrostatic dynamics options and vice versa. 
+2. Fixed decomposition regression for nonhydrostatic model.
+3. Updates from ADAS 5.27 folded into git GMAO_Shared v1.3.9. This brings the GEOSadas code closer to the current GEOSgcm.
+4. Upticks in MOM6, MAPL, env and other repositiories.
+
 ## [10.17.4] - 2021-03-17
 
 ### Zero-diff to previous release: YES
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 375503d8..a8c19d2c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ cmake_policy (SET CMP0054 NEW)
 
 project (
   GEOSgcm
-  VERSION 10.17.4
+  VERSION 10.17.5
   LANGUAGES Fortran CXX C)  # Note - CXX is required for ESMF
 
 if ("${PROJECT_SOURCE_DIR}" STREQUAL "${PROJECT_BINARY_DIR}")