diff --git a/Externals_CAM.cfg b/Externals_CAM.cfg
index b3ee37695..4eedcd152 100644
--- a/Externals_CAM.cfg
+++ b/Externals_CAM.cfg
@@ -1,21 +1,21 @@
 [chem_proc]
 local_path = chem_proc
-protocol = svn
-repo_url = https://svn-ccsm-models.cgd.ucar.edu/tools/proc_atm/chem_proc/release_tags
+protocol = git
+repo_url = https://github.com/ESCOMP/CHEM_PREPROCESSOR.git
 tag = chem_proc5_0_04
 required = True
 
 [carma]
 local_path = src/physics/carma/base
-protocol = svn
-repo_url = https://svn-ccsm-models.cgd.ucar.edu/carma/release_tags
+protocol = git
+repo_url = https://github.com/ESCOMP/CARMA_base.git
 tag = carma3_49_rel
-required = True
+required = False
 
 [cosp2]
 local_path = src/physics/cosp2/src
-protocol = svn
-repo_url = https://github.com/CFMIP/COSPv2.0/tags/
+protocol = git
+repo_url = https://github.com/CFMIP/COSPv2.0
 tag = v2.1.4cesm/src
 required = True