diff --git a/README.md b/README.md
index fa63ce4..648e560 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,79 @@
     -   [Debugging](#debugging)
     -   [How Licenses are Found](#how-licenses-are-found)
     -   [Related information sources on the internet](#related-information-sources-on-the-internet)
-
+<<< clarifications-semver
+326
+ 
+`version` can either be an exact version or a semver range, multiple ranges are supported for a single package, for example:
+327
+ 
+​
+328
+ 
+```json5
+329
+ 
+{
+330
+ 
+    "package_name@^1": {
+331
+ 
+        // Any field available in customFormat can be clarified
+332
+ 
+        "licenses": "GPL",
+333
+ 
+        // ... other fields, see above
+334
+ 
+    },
+335
+ 
+    "package_name@^2": {
+336
+ 
+        // Any field available in customFormat can be clarified
+337
+ 
+        "licenses": "MIT",
+338
+ 
+        // ... other fields, see above
+339
+ 
+    },
+340
+ 
+}
+341
+ 
+```
+342
+ 
+​
+343
+ 
+For overlapping ranges, the first matching entry is used.
+344
+ 
+​
+345
+ 
+The `--clarificationsMatchAll` option, when enabled, raises an error if not all specified clarifications were used, it is off by default.
+346
+ 
+​
+347
+ 
+<a name="custom_format"></a>
+348
+ 
+​
+349
+ 
+#
 ## <a id="a-message-from-the-maintainer"></a>A message from the maintainer
 
 Folks, I love and honor open software (the latter not as much as I should), and therefore I am a little ashamed of the lack of regular care I give to this project. My family (two still young kids and a wife working full-time just as me) plus my hobbies (reading - currently I read the great book "Coders at work" and plan to work my way through "Structure and interpretation of computer programs", a book many great and experienced coders say is kind of a must-read - and homebrewing) take their toll. And then there's the time I need for procrastination as well. You get the picture.
@@ -249,6 +321,7 @@ before.
 
 -   `--angularCli` is just a synonym for `--plainVertical`
 -   `--clarificationsFile [filepath]` A file that describe the license clarifications for each package, see clarificationExample.json, any field available to the customFormat option can be clarified. The clarifications file can also be used to specify a subregion of a package's license file (instead reading the entire file)
+-   `--clarificationsMatchAll [boolean]` This optional new feature is still lacking a description - to be done
 -   `--csv` output in csv format
 -   `--csvComponentPrefix` prefix column for component in csv format
 -   `--customPath` to add a custom Format file in JSON
@@ -322,7 +395,30 @@ The `--clarificationsFile` option can be used to provide custom processing instr
 }
 ```
 
-## <a id="custom_format"></a>Custom format
+`version` can either be an exact version or a semver range, multiple ranges are supported for a single package, for example:
+
+```json5
+{
+    "package_name@^1": {
+        // Any field available in customFormat can be clarified
+        "licenses": "GPL",
+        // ... other fields, see above
+    },
+    "package_name@^2": {
+        // Any field available in customFormat can be clarified
+        "licenses": "MIT",
+        // ... other fields, see above
+    },
+}
+```
+
+For overlapping ranges, the first matching entry is used.
+
+The `--clarificationsMatchAll` option, when enabled, raises an error if not all specified clarifications were used, it is off by default.
+
+<a name="custom_format"></a>
+
+## Custom format
 
 The `--customPath` option can be used with CSV to specify the columns. Note that
 the first column, `module_name`, will always be used.
diff --git a/lib/args.js b/lib/args.js
index bc90219..e9b696e 100644
--- a/lib/args.js
+++ b/lib/args.js
@@ -10,7 +10,8 @@ import path from 'node:path';
 
 const knownOptions = {
     angularCli: Boolean,
-    clarificationsFile: path,
+    clarificationsFile: path,clarificationsMatchAll
+    clarificationsMatchAll: Boolean,
     color: Boolean,
     csv: Boolean,
     csvComponentPrefix: String,
diff --git a/lib/index.js b/lib/index.js
index 33ccb50..51cf51f 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -20,6 +20,7 @@ import spdxCorrect from 'spdx-correct';
 import spdxSatisfies from 'spdx-satisfies';
 import treeify from 'treeify';
 import { createHash } from 'crypto';
+import semver from 'semver';
 
 import * as licenseCheckerHelpers from './licenseCheckerHelpers.js';
 import { getLicenseTitle } from './getLicenseTitle.js';
@@ -45,8 +46,13 @@ const recursivelyCollectAllDependencies = (options) => {
     let licenseData;
     let licenseFile;
     let noticeFiles = [];
-    let clarification = options.clarifications?.[currentPackageNameAndVersion];
+    const clarification = options.clarifications[currentExtendedPackageJson.name]?.find((clarification) => 
+        currentExtendedPackageJson.version == clarification.semverRange || semver.satisfies(currentExtendedPackageJson.version, clarification.semverRange)
+    );
     let passedClarificationCheck = clarification?.checksum ? false : true;
+    if (clarification) {
+        clarification.used = true;
+    }
 
     if (
         // If we have processed this currentPackageNameAndVersion already, just return the data object.
@@ -133,7 +139,7 @@ const recursivelyCollectAllDependencies = (options) => {
     );
 
     if (licenseData) {
-        // License information has been collected from either the clarifiation file or from the package.json file
+        // License information has been collected from either the clarification file or from the package.json file
         /*istanbul ignore else*/
         if (Array.isArray(licenseData) && licenseData.length > 0) {
             moduleInfo.licenses = licenseData.map((moduleLicense) => {
@@ -393,10 +399,21 @@ const init = (args, callback) => {
         pusher = toCheckforFailOn;
     }
 
-    // An object mapping from Package name -> What contents it should have
+    // An object mapping from Package name -> list of what contents it should have, including a semver range for each entry
     let clarifications = {};
     if (args.clarificationsFile) {
-        clarifications = parseJson(args.clarificationsFile);
+        const clarificationsFromFile = parseJson(args.clarificationsFile);
+
+        for (const [versionString, clarification] of Object.entries(clarificationsFromFile)) {
+            const versionSplit = versionString.lastIndexOf('@');
+            if (versionSplit !== -1) {
+                const name = versionString.slice(0, versionSplit);
+                const semverRange = versionString.slice(versionSplit + 1);
+                clarifications[name] ??= [];
+                // keep track for each clarification if it was used, optionally error when not
+                clarifications[name].push({...clarification, semverRange, used: false});
+            }
+        }
     }
 
     if (checker && pusher) {
@@ -432,7 +449,25 @@ const init = (args, callback) => {
             unknown: args.unknown,
             currentRecursionDepth: 0,
             clarifications,
-        });
+        })
+
+        if (args.clarificationsMatchAll) {
+            const unusedClarifications = []
+            for (const [package, entries] of Object.entries(clarifications)) {
+                for (const clarification of entries) {
+                    if (!clarification.used) {
+                        unusedClarifications.push(`${package}@${clarification.semverRange}`);
+                    }
+                }
+            }
+            if (unusedClarifications.length) {
+                console.error(
+                    `Some clarifications (${unusedClarifications.join(', ')}) were unused and --clarificationsMatchAll was specified. Exiting.`,
+                );
+
+                process.exit(1);
+            }
+        }
 
         const colorize = args.color;
         const sorted = {}; // 'sorted' will store the same items as allWantedDepthDependenciesWithVersions, but sorted by package name and version