diff --git a/README.md b/README.md
index 098caaaae05760003bdc03f4ba4bd1bfb9d65efd..a98f16a4bb597718568980339f4b5fee7299a4d0 100644
--- a/README.md
+++ b/README.md
@@ -165,7 +165,8 @@ For some user options, users may use [format codes](https://docs.python.org/3/li
 | outdir                	| '{pwd}/OUTPUT'                                   	| string        	| Location for lightningcast output                                                                                                                                                                                                                                                                                                               	| True                 	|
 | datadir_patt          	| null                                             	| string        	| Value to be appended to the beginning of file paths if they don't point to a valid file. If running through docker ensure that the path being passed through `datadir_patt` is mounted into the container.                                                                                                                                        | True                 	|
 | logfile                   | null                                              | string            | File path to log output too. If not set no logging will happen.                                                                                                                                                                                                                                                                                   |                       |
-| make_img              	| 0                                                	| int           	| Make images. 1=DayLandCloud, 2=VIS, 3=DCC, 4=DCP, 5=sandwich, 0=none. Makes grayscale CH13 at night.                                                                                                                                                                                                                                            	|                      	|
+| make_img              	| 0                                                	| int           	| Make images. 1=DayLandCloud, 2=VIS, 3=DCC, 4=DCP, 5=sandwich, 0=none. Makes grayscale CH13 at night.   
+| num_threads                  | null                                              | int          | Limit the number of CPU threads that tensorflow (prediction engine component) can use.                                                                                                                                                                                                                                         	|                      	|
 | sector_suffix         	| null                                             	| string        	| What to append to the sector name for writing files. E.g., 'AL' will generate output files like <br>so: {outdir}/RadC_AL/{filename} (assuming sector is 'RadC')                                                                                                                                                                                 	|                      	|
 | sector         	      	| null                                    	        | string        	| Hard override sector instead of retrieving dynamically. Use should generally be avoided.                                                                                                                                                                                 	                                                                        |                      	|
 | ll_bbox               	| null                                             	| array[float]    	| Lat/lon bounding box of image. SWlon, NElon, SWlat, NElat. Default (null) is the entire image.                                                                                                                                                                                                                                                      	|                      	|