diff --git a/.gitmodules b/.gitmodules
index 794b3af75a..dd04a95b6f 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -138,7 +138,7 @@ fxDONOTUSEurl = https://github.com/ESMCI/ccs_config_cesm.git
[submodule "cime"]
path = cime
url = https://github.com/ESMCI/cime
-fxtag = cime6.1.144
+fxtag = cime6.1.145
fxrequired = ToplevelRequired
fxDONOTUSEurl = https://github.com/ESMCI/cime
diff --git a/bld/namelist_files/use_cases/1850_cam_lt.xml b/bld/namelist_files/use_cases/1850_cam_lt.xml
index 93d668dfd4..67e38429cd 100644
--- a/bld/namelist_files/use_cases/1850_cam_lt.xml
+++ b/bld/namelist_files/use_cases/1850_cam_lt.xml
@@ -7,7 +7,7 @@
FIXED
-atm/waccm/lb/LBC_17500116-20150116_CMIP6_0p5degLat_c180905.nc
+atm/waccm/lb/CMIP7/LBC_17500116-20221216_CMIP7_0p5degLat_c250326.nc
1850
'CYCLICAL'
'CO2','CH4','N2O','CFC11','CFC12','CFC11eq'
diff --git a/bld/namelist_files/use_cases/1850_cam_mt.xml b/bld/namelist_files/use_cases/1850_cam_mt.xml
index 530983c17e..219027725b 100644
--- a/bld/namelist_files/use_cases/1850_cam_mt.xml
+++ b/bld/namelist_files/use_cases/1850_cam_mt.xml
@@ -7,7 +7,7 @@
FIXED
-atm/waccm/lb/LBC_17500116-20150116_CMIP6_0p5degLat_c180905.nc
+atm/waccm/lb/CMIP7/LBC_17500116-20221216_CMIP7_0p5degLat_c250326.nc
1850
'CYCLICAL'
'CO2','CH4','N2O','CFC11','CFC12','CFC11eq'
diff --git a/bld/namelist_files/use_cases/hist_cam_lt.xml b/bld/namelist_files/use_cases/hist_cam_lt.xml
index dca699285a..c5496281a9 100644
--- a/bld/namelist_files/use_cases/hist_cam_lt.xml
+++ b/bld/namelist_files/use_cases/hist_cam_lt.xml
@@ -7,7 +7,7 @@
atm/cam/solar/SolarForcingCMIP7-4.6_18491230-20240101_sumEPP_c20250630.nc
-atm/waccm/lb/LBC_17500116-20150116_CMIP6_0p5degLat_c180905.nc
+atm/waccm/lb/CMIP7/LBC_17500116-20221216_CMIP7_0p5degLat_c250326.nc
'SERIAL'
'CO2','CH4','N2O','CFC11','CFC12','CFC11eq'
diff --git a/bld/namelist_files/use_cases/hist_cam_mt.xml b/bld/namelist_files/use_cases/hist_cam_mt.xml
index 95cefd2e90..5faa24d9f5 100644
--- a/bld/namelist_files/use_cases/hist_cam_mt.xml
+++ b/bld/namelist_files/use_cases/hist_cam_mt.xml
@@ -7,7 +7,7 @@
atm/cam/solar/SolarForcingCMIP7-4.6_18491230-20240101_sumEPP_c20250630.nc
-atm/waccm/lb/LBC_17500116-20150116_CMIP6_0p5degLat_c180905.nc
+atm/waccm/lb/CMIP7/LBC_17500116-20221216_CMIP7_0p5degLat_c250326.nc
'SERIAL'
'CO2','CH4','N2O','CFC11','CFC12','CFC11eq'
diff --git a/bld/namelist_files/use_cases/waccm_ma_hist_cam7.xml b/bld/namelist_files/use_cases/waccm_ma_hist_cam7.xml
index 9a6ae47352..915ccd5245 100644
--- a/bld/namelist_files/use_cases/waccm_ma_hist_cam7.xml
+++ b/bld/namelist_files/use_cases/waccm_ma_hist_cam7.xml
@@ -22,7 +22,7 @@
SERIAL
-atm/waccm/lb/LBC_17500116-20150116_CMIP6_0p5degLat_c180905.nc
+atm/waccm/lb/CMIP7/LBC_17500116-20221216_CMIP7_0p5degLat_c250326.nc
'CCL4', 'CF2CLBR', 'CF3BR', 'CFC11', 'CFC113', 'CFC12', 'CH3BR', 'CH3CCL3', 'CH3CL', 'CH4', 'CO2', 'H2',
'HCFC22', 'N2O', 'CFC114', 'CFC115', 'HCFC141B', 'HCFC142B', 'CH2BR2', 'CHBR3', 'H2402', 'OCS', 'CFC11eq'
diff --git a/bld/namelist_files/use_cases/waccm_sc_hist_cam7.xml b/bld/namelist_files/use_cases/waccm_sc_hist_cam7.xml
index 2be3c29239..32753d17ad 100644
--- a/bld/namelist_files/use_cases/waccm_sc_hist_cam7.xml
+++ b/bld/namelist_files/use_cases/waccm_sc_hist_cam7.xml
@@ -18,7 +18,7 @@
SERIAL
-atm/waccm/lb/LBC_17500116-20150116_CMIP6_0p5degLat_c180905.nc
+atm/waccm/lb/CMIP7/LBC_17500116-20221216_CMIP7_0p5degLat_c250326.nc
'CO2','CH4','N2O','CFC11','CFC12','CFC11eq'
diff --git a/cime b/cime
index e2cf67742b..0fc24bad91 160000
--- a/cime
+++ b/cime
@@ -1 +1 @@
-Subproject commit e2cf67742b1da605da1f782bb53e85915e375a3c
+Subproject commit 0fc24bad917f692bce6438d56c573b4e9c7a6ef8
diff --git a/doc/ChangeLog b/doc/ChangeLog
index 9277fc5441..5bc197e67e 100644
--- a/doc/ChangeLog
+++ b/doc/ChangeLog
@@ -1,6 +1,80 @@
===============================================================
+Tag name: cam6_4_140
+Originator(s): cacraigucar, hannay
+Date: Dec 29, 2025
+One-line Summary: Update LBC file for CAM7 use_cases
+Github PR URL: https://github.com/ESCOMP/CAM/pull/1465
+
+Purpose of changes (include the issue number and title text for each relevant GitHub issue):
+ - Add CMIP7 LBC file as default: https://github.com/ESCOMP/CAM/issues/1463
+
+Describe any changes made to build system: N/A
+
+Describe any changes made to the namelist: N/A
+
+List any changes to the defaults for the boundary datasets: N/A
+
+Describe any substantial timing or memory changes: N/A
+
+Code reviewed by: fvitt
+
+List all files eliminated: N/A
+
+List all files added and what they do: N/A
+
+List all existing files that have been modified, and describe the changes:
+M bld/namelist_files/use_cases/1850_cam_lt.xml
+M bld/namelist_files/use_cases/1850_cam_mt.xml
+M bld/namelist_files/use_cases/hist_cam_lt.xml
+M bld/namelist_files/use_cases/hist_cam_mt.xml
+M bld/namelist_files/use_cases/waccm_ma_hist_cam7.xml
+M bld/namelist_files/use_cases/waccm_sc_hist_cam7.xml
+ - update the LBC file used in CAM7 runs
+
+M .gitmodules
+M cime
+ - update cime to get the new inputdata location for wget
+
+If there were any failures reported from running test_driver.sh on any test
+platform, and checkin with these failures has been OK'd by the gatekeeper,
+then copy the lines from the td.*.status files for the failed tests to the
+appropriate machine below. All failed tests must be justified.
+
+derecho/intel/aux_cam:
+ ERC_D_Ln9.mpasa120_mpasa120.FHISTC_LTso.derecho_intel.cam-outfrq9s_mpasa120 (Overall: DIFF) details:
+ ERC_D_Ln9.ne30pg3_ne30pg3_mt232.F1850C_LTso.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
+ ERI_D_Ln18.ne30pg3_ne30pg3_mt232.FHISTC_LTso.derecho_intel.cam-outfrq3s_eri (Overall: DIFF) details:
+ ERP_D_Ln9.ne30pg3_ne30pg3_mt232.F1850C_MTso.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
+ ERP_Ld3.ne16pg3_ne16pg3_mg17.FHISTC_WAt1ma.derecho_intel.cam-reduced_hist1d (Overall: DIFF) details:
+ ERP_Ln9.ne30pg3_ne30pg3_mg17.FHISTC_WAma.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
+ ERR_Ln9.ne16pg3_ne16pg3_mt232.FHISTC_LTso.derecho_intel.cam-outfrq9s_bwic (Overall: DIFF) details:
+ ERS_Ln9.ne30pg3_ne30pg3_mg17.FHISTC_WXma.derecho_intel.cam-outfrq9s_ctem (Overall: DIFF) details:
+ SMS_C2_D_Ln9.ne16pg3_ne16pg3_mg17.FHISTC_WXma.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
+ SMS_D_Ln9.ne30pg3_ne30pg3_mt232.FHISTC_MTso.derecho_intel.cam-outfrq9s (Overall: DIFF) details:
+ - Answer changes for CAM7 runs due to new LBC file
+
+ SMS_D_Ln9_P1536x1.ne0CONUSne30x8_ne0CONUSne30x8_mt12.FCHIST.derecho_intel.cam-outfrq9s (Overall: PASS) details:
+ - This test appears to no longer fail after the last derecho downtime. Will no longer track this failure in the ChangeLog.
+
+derecho/nvhpc/aux_cam: (not run as nothing has changed with the file system)
+
+izumi/nag/aux_cam:
+ ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_nag.cam-cosp_rad_diags (Overall: DIFF) details:
+ ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_nag.cam-outfrq9s_nochem (Overall: DIFF) details:
+ - Answer changes for CAM7 runs due to new LBC file
+
+izumi/gnu/aux_cam:
+ ERC_D_Ln9.mpasa480_mpasa480_mt232.FHISTC_LTso.izumi_gnu.cam-outfrq9s_mpasa480 (Overall: DIFF) details:
+ ERC_D_Ln9.ne3pg3_ne3pg3_mt232.FHISTC_LTso.izumi_gnu.cam-sat_lcltod (Overall: DIFF) details:
+ SMS_D_Ln3.ne3pg3_ne3pg3_mt232.PC7.izumi_gnu.cam-pc7_ne3pg3 (Overall: DIFF) details:
+ - Answer changes for CAM7 runs due to new LBC file
+
+
+===============================================================
+===============================================================
+
Tag name: cam6_4_139
Originator(s): cacraigucar, kuanchihwang, gold2718, jedwards4b
Date: Dec 24, 2025