diff --git a/CHANGELOG.md b/CHANGELOG.md
index 89b93d0..b988e81 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Changed data level errors from an exception to a validation error reported on the item.
 - Fixed behavior of the reading SAS macro when it deals with fields that have a value too long in the XML file.
+- Added nw 'specs' parameter to allow writing a provided specifications version instead of the default library one.
 
 **Version 10.1**
 
diff --git a/docs/sas/macro/write_naaccr_xml_macro.sas b/docs/sas/macro/write_naaccr_xml_macro.sas
index 3728634..b6ef91c 100644
--- a/docs/sas/macro/write_naaccr_xml_macro.sas
+++ b/docs/sas/macro/write_naaccr_xml_macro.sas
@@ -1,4 +1,4 @@
-%MACRO writeNaaccrXml(libpath, targetfile, naaccrversion="", recordtype="", dataset=alldata, items="", dictfile="", dictUri="", writenum="no", cleanuptempfiles="yes", grouptumors="yes");
+%MACRO writeNaaccrXml(libpath, targetfile, naaccrversion="", recordtype="", dataset=alldata, items="", dictfile="", dictUri="", writenum="no", cleanuptempfiles="yes", grouptumors="yes", specs="");
 
 /************************************************************************************************************;
     This macro writes a given data fileset into a NAACCR XML data file.
@@ -43,6 +43,8 @@
     - grouptumors should be "yes" or "no" (defaults to "yes"); if "yes" then the tumors that have the same
         patient ID number (and appearing together in the observations) will be grouped under one Patient tag;
         if "no", each tumor will appear under its own Patient tag (and every Patient will contain exactly one Tumor).
+    - specs is the specifications version to write to the data file (typically something like X.X); it's optional 
+        and the library default value is used if not provided.
 
 
     Note that the macro creates a temp fixed-column and input SAS format file in the same folder as the target file;
@@ -75,6 +77,7 @@
     12/14/2021 - Fabian Depry - Added new optional grouptumors parameter to allow not grouping the tumors.
     06/04/2023 - Fabian Depry - Re-wrote the macro to use a temp fixed-column file instead of a temp CSV file.
     06/22/2023 - Fabian Depry - Renamed cleanupcsv parameter to cleanuptempfiles
+    08/09/2024 - Fabian Depry - Added new optional specs parameter to allow forcing a specific version to be written.
  ************************************************************************************************************/;
 
 /*
@@ -131,6 +134,7 @@ data _null_;
     j1.callVoidMethod('setDictionary', &dictfile, &dicturi);
     j1.callVoidMethod('setWriteNumbers', &writenum);
     j1.callVoidMethod('setGroupTumors', &grouptumors);
+    j1.callVoidMethod('setSpecificationsVersion', &specs);
     j1.callVoidMethod('convert', &items);
     j1.callVoidMethod('cleanup', &cleanuptempfiles);
     j1.delete();
diff --git a/src/main/java/com/imsweb/naaccrxml/sas/SasCsvToXml.java b/src/main/java/com/imsweb/naaccrxml/sas/SasCsvToXml.java
index 9da9395..69c2ddc 100644
--- a/src/main/java/com/imsweb/naaccrxml/sas/SasCsvToXml.java
+++ b/src/main/java/com/imsweb/naaccrxml/sas/SasCsvToXml.java
@@ -42,6 +42,8 @@ public class SasCsvToXml {
 
     private boolean _groupTumors;
 
+    private String _specificationsVersion;
+
     public SasCsvToXml(String xmlPath, String naaccrVersion, String recordType) {
         this(SasUtils.computeCsvPathFromXmlPath(xmlPath), xmlPath, naaccrVersion, recordType);
     }
@@ -116,6 +118,14 @@ public void setDictionary(String dictionaryPath, String dictionaryUri) {
         }
     }
 
+    /**
+     * The specificatoins version to use when writting the XML data.
+     */
+    public void setSpecificationsVersion(String specificationsVersion) {
+        if (specificationsVersion != null && !specificationsVersion.trim().isEmpty())
+            _specificationsVersion = specificationsVersion;
+    }
+
     public String getCsvPath() {
         return _csvFile.getAbsolutePath();
     }
@@ -231,7 +241,10 @@ else if ("Tumor".equals(field.getParentTag()))
                         if (!_dictionaryFiles.isEmpty() && _dictionaryUris != null && !_dictionaryUris.trim().isEmpty())
                             writer.write("\n            userDictionaryUri=\"" + _dictionaryUris + "\"");
                         writer.write("\n            recordType=\"" + _recordType + "\"");
-                        writer.write("\n            specificationVersion=\"1.7\"");
+                        if (_specificationsVersion != null)
+                            writer.write("\n            specificationVersion=\"" + _specificationsVersion + "\"");
+                        else
+                            writer.write("\n            specificationVersion=\"1.7\"");
                         writer.write("\n            xmlns=\"http://naaccr.org/naaccrxml\"");
                         writer.write(">\n");
                         for (Entry<String, String> entry : rootFields.entrySet()) {
diff --git a/src/main/java/com/imsweb/naaccrxml/sas/SasFlatToXml.java b/src/main/java/com/imsweb/naaccrxml/sas/SasFlatToXml.java
index 27dda05..d2b7c34 100644
--- a/src/main/java/com/imsweb/naaccrxml/sas/SasFlatToXml.java
+++ b/src/main/java/com/imsweb/naaccrxml/sas/SasFlatToXml.java
@@ -63,6 +63,9 @@ public class SasFlatToXml {
     // the CSV list of fields contained in the data set
     private String _dataSetFields;
 
+    // the (optional) specifications verison to use (uses the default library one if not provided)
+    private String _specificationsVersion;
+
     /**
      * Constructor.
      */
@@ -164,6 +167,14 @@ public void setDictionary(String dictionaryPath, String dictionaryUri) {
         }
     }
 
+    /**
+     * The specificatoins version to use when writting the XML data.
+     */
+    public void setSpecificationsVersion(String specificationsVersion) {
+        if (specificationsVersion != null && !specificationsVersion.trim().isEmpty())
+            _specificationsVersion = specificationsVersion;
+    }
+
     /**
      * Returns the user-defined dictionaries.
      */
@@ -415,7 +426,10 @@ else if (line.length() < expectedLineLength) {
                         if (!_dictionaryFiles.isEmpty() && _dictionaryUris != null && !_dictionaryUris.trim().isEmpty())
                             writer.write("\n            userDictionaryUri=\"" + _dictionaryUris + "\"");
                         writer.write("\n            recordType=\"" + _recordType + "\"");
-                        writer.write("\n            specificationVersion=\"1.7\"");
+                        if (_specificationsVersion != null)
+                            writer.write("\n            specificationVersion=\"" + _specificationsVersion + "\"");
+                        else
+                            writer.write("\n            specificationVersion=\"1.7\"");
                         writer.write("\n            xmlns=\"http://naaccr.org/naaccrxml\"");
                         writer.write(">\n");
                         for (Entry<String, SasFieldInfo> entry : rootFields.entrySet()) {