diff --git a/forge.config.js b/forge.config.js
index c869707..b3aad8a 100644
--- a/forge.config.js
+++ b/forge.config.js
@@ -94,6 +94,7 @@ module.exports = {
       'ToDo.txt',
       'TrimSP.cfg',
       'fortran/*',
+      '(^|/)resources/bin($|/)',
       '(^|/)tests?($|/)',
       '(^|/)__tests__($|/)',
       '(^|/)(test|spec)($|/)',
diff --git a/fortran/trimspNL.F b/fortran/trimspNL.F
index 3fcda62..7fc77ae 100644
--- a/fortran/trimspNL.F
+++ b/fortran/trimspNL.F
@@ -69,7 +69,7 @@ C     Maximum number of elements in each layer, was limited to 5.
       PARAMETER (MAXDNL5=MAXNL*MAXD5)
       PARAMETER (MAXNL5p2=MAXNL5*MAXNL5*MAXD)
       PARAMETER (MAXNLm15=(MAXNL-1)*MAXEL)
-      PARAMETER (TRIMSP_VERSION='1.3.0')
+      PARAMETER (TRIMSP_VERSION='1.3.1')
       LOGICAL   TEST(64),TESTR(2000),TEST1(2000)
       LOGICAL   EQUAL,FORT33
       INTEGER*4 ISRCHFGT,ISRCHFGE,ILLZ
diff --git a/package-lock.json b/package-lock.json
index 676267d..7653f8d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "TrimSP",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "TrimSP",
-      "version": "1.3.0",
+      "version": "1.3.1",
       "license": "GPL2",
       "dependencies": {
         "plotly.js-dist": "^1.58.4"
diff --git a/package.json b/package.json
index 4135513..bfa4b63 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "TrimSP",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "Trim.SP simulation to calculate stopping profile of implanted probes.",
   "main": "main.js",
   "scripts": {
diff --git a/resources/bin/trimspNL b/resources/bin/trimspNL
index 98e6bad..738506a 100755
Binary files a/resources/bin/trimspNL and b/resources/bin/trimspNL differ