diff --git a/Changelog.md b/Changelog.md
index df8093661..85142ac52 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,9 @@
 # FOSSA CLI Changelog
 
+## Unreleased
+
+- Scala/sbt: Run the uppercase `dependencyBrowseTreeHTML` task when the project explicitly enables `addDependencyTreePlugin` on sbt 1.4+. Previously the lowercase `dependencyBrowseTreeHtml` was used unconditionally for the explicit-plugin path, which sbt 1.4+ rejects, causing deep dependencies to be silently dropped. ([TKT-15490](https://fossa.atlassian.net/browse/ANE-2718))
+
 ## 3.17.6
 
 - Config: `paths.only` and `paths.exclude` in `.fossa.yml` now accept glob patterns. ([#1703](https://github.com/fossas/fossa-cli/pull/1703))
diff --git a/src/Strategy/Scala.hs b/src/Strategy/Scala.hs
index 6b85919f4..dbcd3278f 100644
--- a/src/Strategy/Scala.hs
+++ b/src/Strategy/Scala.hs
@@ -60,7 +60,7 @@ import Strategy.Maven.Pom.PomFile (RawPom (rawPomArtifact, rawPomGroup, rawPomVe
 import Strategy.Maven.Pom.Resolver (buildGlobalClosure)
 import Strategy.Scala.Common (mkSbtCommand)
 import Strategy.Scala.Errors (FailedToListProjects (FailedToListProjects), MaybeWithoutDependencyTreeTask (..), MissingFullDependencyPlugin (..), sbtDepsGraphPluginUrl, scalaFossaDocUrl)
-import Strategy.Scala.Plugin (genTreeJson, hasDependencyPlugins)
+import Strategy.Scala.Plugin (DependencyPluginsDetected (..), genTreeJson, hasDependencyPlugins)
 import Strategy.Scala.SbtDependencyTree (SbtArtifact (SbtArtifact), analyze, sbtDepTreeCmd)
 import Strategy.Scala.SbtDependencyTreeJson qualified as TreeJson
 import Types (
@@ -161,10 +161,10 @@ findProjects = walkWithFilters' $ \dir _ files -> do
           . context ("Listing sbt projects at " <> pathToText dir)
           $ genPoms dir
 
-      (miniDepPlugin, depPlugin) <- hasDependencyPlugins dir
-      case (projectsRes, miniDepPlugin, depPlugin) of
+      DependencyPluginsDetected{hasMiniDependencyTreePlugin, dependencyTreePlugin} <- hasDependencyPlugins dir
+      case (projectsRes, hasMiniDependencyTreePlugin, dependencyTreePlugin) of
         (Nothing, _, _) -> pure ([], WalkSkipAll)
-        (Just projects, False, False) -> pure ([SbtTargets Nothing [] projects], WalkSkipAll)
+        (Just projects, False, Nothing) -> pure ([SbtTargets Nothing [] projects], WalkSkipAll)
         (Just projects, True, _) -> do
           -- project is using miniature dependency tree plugin,
           -- which is included by default with sbt 1.4+
@@ -184,9 +184,13 @@ findProjects = walkWithFilters' $ \dir _ files -> do
             (True, _) -> pure ([SbtTargets Nothing [] projects], WalkSkipAll)
             (_, Just _) -> pure ([SbtTargets depTreeStdOut [] projects], WalkSkipAll)
             (_, _) -> pure ([], WalkSkipAll)
-        (Just projects, False, True) -> do
-          -- project is explicitly configured to use dependency-tree-plugin
-          treeJSONs <- recover $ genTreeJson dir
+        (Just projects, False, Just pluginKind) -> do
+          -- project is explicitly configured to use dependency-tree-plugin.
+          -- The casing of the dependencyBrowseTree task differs between the
+          -- modern (sbt 1.4+) DependencyTreePlugin and the legacy
+          -- net.virtualvoid sbt-dependency-graph plugin; pluginKind selects
+          -- the right one. See TKT-15490 / ANE-2718.
+          treeJSONs <- recover $ genTreeJson pluginKind dir
           pure ([SbtTargets Nothing (fromMaybe [] treeJSONs) projects], WalkSkipAll)
 
 analyzeWithPoms :: (Has Diagnostics sig m) => ScalaProject -> m DependencyResults
@@ -199,13 +203,13 @@ analyzeWithPoms (ScalaProject _ _ closure) = context "Analyzing sbt dependencies
       }
 
 analyzeWithDepTreeJson :: (Has ReadFS sig m, Has Diagnostics sig m) => ScalaProject -> m DependencyResults
-analyzeWithDepTreeJson (ScalaProject _ treeJson closure) = context "Analyzing sbt dependencies using dependencyBrowseTreeHTML" $ do
+analyzeWithDepTreeJson (ScalaProject _ treeJson closure) = context "Analyzing sbt dependencies using dependency tree JSON" $ do
   treeJson' <-
     errCtx MissingFullDependencyPluginCtx $
       errHelp MissingFullDependencyPluginHelp $
         errDoc sbtDepsGraphPluginUrl $
           errDoc scalaFossaDocUrl $
-            fromMaybeText "Could not retrieve output from sbt dependencyBrowseTreeHTML" treeJson
+            fromMaybeText "Could not retrieve dependency tree JSON output from sbt" treeJson
   projectGraph <- TreeJson.analyze treeJson'
   pure $
     DependencyResults
diff --git a/src/Strategy/Scala/Plugin.hs b/src/Strategy/Scala/Plugin.hs
index d921b1781..cb514b750 100644
--- a/src/Strategy/Scala/Plugin.hs
+++ b/src/Strategy/Scala/Plugin.hs
@@ -4,6 +4,8 @@ module Strategy.Scala.Plugin (
   hasDependencyPlugins,
   detectDependencyPlugins,
   genTreeJson,
+  DependencyTreePluginKind (..),
+  DependencyPluginsDetected (..),
 ) where
 
 import Control.Effect.Diagnostics (Diagnostics, fatalText)
@@ -22,45 +24,102 @@ import Effect.Exec (
 import Path (Abs, Dir, File, Path, mkRelFile, parent, parseAbsFile, (</>))
 import Strategy.Scala.Common (mkSbtCommand)
 
+-- | Which non-mini dependency-tree plugin (if any) the project has installed.
+--
+-- The two plugins differ in the casing of their @dependencyBrowseTree@ task.
+-- See 'mkDependencyBrowseTreeCmd' for the command names.
+data DependencyTreePluginKind
+  = -- | @sbt.plugins.DependencyTreePlugin@. Built into sbt 1.4+ and enabled
+    -- explicitly via @addDependencyTreePlugin@ in @plugins.sbt@. Provides the
+    -- uppercase @dependencyBrowseTreeHTML@ task.
+    ModernDependencyTreePlugin
+  | -- | @net.virtualvoid.sbt.graph.DependencyGraphPlugin@. The third-party
+    -- @sbt-dependency-graph@ plugin used on sbt < 1.4. Provides the lowercase
+    -- @dependencyBrowseTreeHtml@ task.
+    LegacyDependencyGraphPlugin
+  deriving (Eq, Ord, Show)
+
+-- | What the @sbt plugins@ output told us about dependency-tree plugins.
+data DependencyPluginsDetected = DependencyPluginsDetected
+  { hasMiniDependencyTreePlugin :: Bool
+  , dependencyTreePlugin :: Maybe DependencyTreePluginKind
+  }
+  deriving (Eq, Ord, Show)
+
 -- | Returns list of plugins used by sbt.
 -- Ref: https://www.scala-sbt.org/1.x/docs/Plugins.html
 getPlugins :: Command
 getPlugins = mkSbtCommand "plugins"
 
--- | Returns (hasMiniDependencyTreePlugin, hasDependencyTreePlugin) by running sbt plugins.
-hasDependencyPlugins :: (Has Exec sig m, Has Diagnostics sig m) => Path Abs Dir -> m (Bool, Bool)
+-- | Detect which dependency-tree plugins are loaded by running @sbt plugins@.
+hasDependencyPlugins :: (Has Exec sig m, Has Diagnostics sig m) => Path Abs Dir -> m DependencyPluginsDetected
 hasDependencyPlugins projectDir = do
   stdoutText <- (TextLazy.toStrict . decodeUtf8) <$> context "Identifying plugins" (execThrow projectDir getPlugins)
   pure $ detectDependencyPlugins stdoutText
 
--- | Detect dependency plugins from sbt plugins output.
--- Returns (hasMiniDependencyTreePlugin, hasDependencyTreePlugin).
-detectDependencyPlugins :: Text -> (Bool, Bool)
+-- | Classify dependency-tree plugins from the @sbt plugins@ output.
+--
+-- The plugin names mapped here:
+--
+--    * @sbt.plugins.MiniDependencyTreePlugin@ — bundled with sbt 1.4+, gives
+--      us the @dependencyTree@ task used by 'Strategy.Scala.SbtDependencyTree'.
+--    * @sbt.plugins.DependencyTreePlugin@ — opt-in on sbt 1.4+ via
+--      @addDependencyTreePlugin@. Provides the uppercase
+--      @dependencyBrowseTreeHTML@ task.
+--    * @net.virtualvoid.sbt.graph.DependencyGraphPlugin@ — third-party plugin
+--      used on sbt < 1.4. Provides the lowercase @dependencyBrowseTreeHtml@
+--      task.
+--
+-- Detection anchors on the @\<FQCN\>: enabled in@ suffix rather than the bare
+-- FQCN. @sbt plugins@ lists plugins the user has explicitly disabled (via
+-- @disablePlugins(...)@) with @: disabled in \<scope\>@ — those still
+-- contain the FQCN as a substring, so an unanchored match would wrongly
+-- route to a task that doesn't exist on the active plugin set.
+--
+-- When both modern and legacy non-mini plugins are present we prefer the
+-- modern one (sbt 1.4+ wins) since legacy plugin presence on a modern sbt
+-- typically means the user has both kinds of declarations in their build.
+detectDependencyPlugins :: Text -> DependencyPluginsDetected
 detectDependencyPlugins stdoutText =
-  ( Text.count ".MiniDependencyTreePlugin" stdoutText > 0
-  , Text.count ".DependencyTreePlugin" stdoutText > 0
-      || Text.count "net.virtualvoid.sbt.graph.DependencyGraphPlugin" stdoutText > 0 -- sbt < 1.4
-  )
+  DependencyPluginsDetected
+    { hasMiniDependencyTreePlugin = "sbt.plugins.MiniDependencyTreePlugin: enabled in" `Text.isInfixOf` stdoutText
+    , dependencyTreePlugin =
+        if "sbt.plugins.DependencyTreePlugin: enabled in" `Text.isInfixOf` stdoutText
+          then Just ModernDependencyTreePlugin
+          else
+            if "net.virtualvoid.sbt.graph.DependencyGraphPlugin: enabled in" `Text.isInfixOf` stdoutText
+              then Just LegacyDependencyGraphPlugin
+              else Nothing
+    }
 
--- | Generates Dependency Trees.
--- Ref: https://github.com/sbt/sbt/blob/master/main/src/main/scala/sbt/plugins/DependencyTreeSettings.scala#L101
---
--- This command unlike 'dependencyBrowseTree', does not open
--- the browser when executed.
+-- | The sbt task that writes @tree.html@/@tree.json@ alongside its dependency
+-- output. Plugin name vs task casing:
 --
--- It writes following files in target directory:
---  ./tree.json
---  ./tree.html
---  ./tree.data.js
+--    * 'ModernDependencyTreePlugin' (sbt 1.4+, @addDependencyTreePlugin@) →
+--      @dependencyBrowseTreeHTML@.
+--    * 'LegacyDependencyGraphPlugin' (sbt < 1.4, @sbt-dependency-graph@) →
+--      @dependencyBrowseTreeHtml@.
 --
--- This command is only used when the plugin is installed explicitly, i.e. sbt < 1.4.
--- Newer versions of sbt will use the built-in dependency graph plugin.
-mkDependencyBrowseTreeHTMLCmd :: Command
-mkDependencyBrowseTreeHTMLCmd = mkSbtCommand "dependencyBrowseTreeHtml"
+-- Picking the wrong casing produces an sbt error like
+-- @[error] Not a valid command: dependencyBrowseTreeHTML@ which surfaces to
+-- the user as "Could not retrieve output from sbt dependencyBrowseTreeHTML".
+-- That regression (CLI 3.8.30) is tracked under TKT-15490 / ANE-2718.
+mkDependencyBrowseTreeCmd :: DependencyTreePluginKind -> Command
+mkDependencyBrowseTreeCmd ModernDependencyTreePlugin = mkSbtCommand "dependencyBrowseTreeHTML"
+mkDependencyBrowseTreeCmd LegacyDependencyGraphPlugin = mkSbtCommand "dependencyBrowseTreeHtml"
 
-genTreeJson :: (Has Exec sig m, Has Diagnostics sig m) => Path Abs Dir -> m [Path Abs File]
-genTreeJson projectDir = do
-  stdoutBL <- context "Generating dependency tree html" $ execThrow projectDir mkDependencyBrowseTreeHTMLCmd
+-- | Generates dependency trees by invoking the appropriate
+-- @dependencyBrowseTree*@ task. Unlike @dependencyBrowseTree@, this does not
+-- open a browser when executed.
+--
+-- It writes the following files in the target directory:
+--
+--    * @./tree.json@
+--    * @./tree.html@
+--    * @./tree.data.js@
+genTreeJson :: (Has Exec sig m, Has Diagnostics sig m) => DependencyTreePluginKind -> Path Abs Dir -> m [Path Abs File]
+genTreeJson pluginKind projectDir = do
+  stdoutBL <- context "Generating dependency tree html" $ execThrow projectDir (mkDependencyBrowseTreeCmd pluginKind)
 
   -- stdout for "sbt dependencyBrowseTreeHTML" looks like:
   -- -
diff --git a/test/Scala/PluginSpec.hs b/test/Scala/PluginSpec.hs
index 61cf94447..0c65c3dbe 100644
--- a/test/Scala/PluginSpec.hs
+++ b/test/Scala/PluginSpec.hs
@@ -5,7 +5,11 @@ module Scala.PluginSpec (
 ) where
 
 import Data.Text (Text)
-import Strategy.Scala.Plugin (detectDependencyPlugins)
+import Strategy.Scala.Plugin (
+  DependencyPluginsDetected (..),
+  DependencyTreePluginKind (..),
+  detectDependencyPlugins,
+ )
 import Test.Hspec (
   Spec,
   describe,
@@ -18,20 +22,54 @@ spec :: Spec
 spec = do
   describe "detectDependencyPlugins" $ do
     it "should detect MiniDependencyTreePlugin (sbt 1.4+ built-in)" $ do
-      detectDependencyPlugins sbt14BuiltinOnly `shouldBe` (True, False)
+      detectDependencyPlugins sbt14BuiltinOnly
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = True, dependencyTreePlugin = Nothing}
 
-    it "should detect explicit DependencyTreePlugin" $ do
-      detectDependencyPlugins sbtExplicitPluginOnly `shouldBe` (False, True)
+    it "should detect explicit modern DependencyTreePlugin (sbt 1.4+ addDependencyTreePlugin)" $ do
+      detectDependencyPlugins sbtModernExplicitPluginOnly
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = False, dependencyTreePlugin = Just ModernDependencyTreePlugin}
 
-    it "should detect legacy net.virtualvoid plugin" $ do
-      detectDependencyPlugins sbtLegacyVirtualvoidPlugin `shouldBe` (False, True)
+    it "should detect legacy net.virtualvoid plugin (sbt < 1.4 sbt-dependency-graph)" $ do
+      detectDependencyPlugins sbtLegacyVirtualvoidPlugin
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = False, dependencyTreePlugin = Just LegacyDependencyGraphPlugin}
 
     -- TKT-14742: When both plugins present, findProjects should prefer MiniDependencyTreePlugin
-    it "should detect both plugins when MiniDependencyTreePlugin AND explicit plugin present" $ do
-      detectDependencyPlugins sbt14WithExplicitPlugin `shouldBe` (True, True)
+    it "should detect both plugins when MiniDependencyTreePlugin AND modern explicit plugin present" $ do
+      detectDependencyPlugins sbt14WithExplicitPlugin
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = True, dependencyTreePlugin = Just ModernDependencyTreePlugin}
+
+    -- TKT-15490: sbt 1.11.5 with addDependencyTreePlugin and no auto-loaded
+    -- MiniDependencyTreePlugin must be classified as ModernDependencyTreePlugin
+    -- so the analyzer runs the uppercase `dependencyBrowseTreeHTML` task. The
+    -- pre-fix code returned (False, True) and the routing dispatched to the
+    -- legacy lowercase `dependencyBrowseTreeHtml`, which sbt 1.4+ rejects.
+    it "should classify modern DependencyTreePlugin alone as Modern (TKT-15490 routing guard)" $ do
+      let detected = detectDependencyPlugins sbt111ExplicitPluginOnly
+      hasMiniDependencyTreePlugin detected `shouldBe` False
+      dependencyTreePlugin detected `shouldBe` Just ModernDependencyTreePlugin
+
+    -- If a project somehow lists both the modern and legacy plugin, prefer
+    -- the modern one — sbt 1.4+ wins, since the legacy plugin will not
+    -- function on a sbt that also surfaces sbt.plugins.DependencyTreePlugin.
+    it "should prefer modern DependencyTreePlugin when both modern and legacy are present" $ do
+      detectDependencyPlugins sbtBothModernAndLegacy
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = False, dependencyTreePlugin = Just ModernDependencyTreePlugin}
 
     it "should detect no plugins when neither is present" $ do
-      detectDependencyPlugins sbtNoPlugins `shouldBe` (False, False)
+      detectDependencyPlugins sbtNoPlugins
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = False, dependencyTreePlugin = Nothing}
+
+    -- `sbt plugins` lists user-disabled plugins (`disablePlugins(...)`) with a
+    -- ": disabled in <scope>" suffix. The FQCN still appears on those lines,
+    -- so detection must anchor on ": enabled in" to avoid routing to a task
+    -- the active plugin set doesn't provide.
+    it "should not treat MiniDependencyTreePlugin as present when listed as disabled" $ do
+      detectDependencyPlugins sbtDisabledMiniPlugin
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = False, dependencyTreePlugin = Nothing}
+
+    it "should not treat modern DependencyTreePlugin as present when listed as disabled" $ do
+      detectDependencyPlugins sbtDisabledModernPlugin
+        `shouldBe` DependencyPluginsDetected{hasMiniDependencyTreePlugin = False, dependencyTreePlugin = Nothing}
 
 -- sbt 1.4+ with only built-in plugin
 sbt14BuiltinOnly :: Text
@@ -49,9 +87,10 @@ sbt14BuiltinOnly =
 [info]   sbt.plugins.SemanticdbPlugin: enabled in root
 |]
 
--- sbt < 1.4 with explicit addDependencyTreePlugin
-sbtExplicitPluginOnly :: Text
-sbtExplicitPluginOnly =
+-- sbt 1.4+ with explicit addDependencyTreePlugin and no MiniDependencyTreePlugin
+-- listed (the case the customer in TKT-15490 hit on sbt 1.11.5).
+sbtModernExplicitPluginOnly :: Text
+sbtModernExplicitPluginOnly =
   [r|[info] welcome to sbt 1.3.13 (Eclipse Adoptium Java 11.0.21)
 [info] loading global plugins from /Users/test/.sbt/1.0/plugins
 [info] loading project definition from /Users/test/project/project
@@ -64,6 +103,24 @@ sbtExplicitPluginOnly =
 [info]   sbt.plugins.DependencyTreePlugin: enabled in root
 |]
 
+-- sbt 1.11.5 with addDependencyTreePlugin in plugins.sbt — mirrors the
+-- customer environment from TKT-15490. The customer reported that the
+-- pre-fix CLI invoked the lowercase `dependencyBrowseTreeHtml`, which sbt
+-- 1.4+ rejects.
+sbt111ExplicitPluginOnly :: Text
+sbt111ExplicitPluginOnly =
+  [r|[info] welcome to sbt 1.11.5 (Eclipse Adoptium Java 17.0.10)
+[info] loading global plugins from /Users/test/.sbt/1.0/plugins
+[info] loading project definition from /Users/test/project/project
+[info] loading settings for project root from build.sbt ...
+[info] set current project to test-project (in build file:/Users/test/project/)
+[info] In file:/Users/test/project/
+[info]   sbt.plugins.CorePlugin: enabled in root
+[info]   sbt.plugins.IvyPlugin: enabled in root
+[info]   sbt.plugins.JvmPlugin: enabled in root
+[info]   sbt.plugins.DependencyTreePlugin: enabled in root
+|]
+
 -- sbt < 1.4 with legacy net.virtualvoid plugin
 sbtLegacyVirtualvoidPlugin :: Text
 sbtLegacyVirtualvoidPlugin =
@@ -96,6 +153,18 @@ sbt14WithExplicitPlugin =
 [info]   sbt.plugins.SemanticdbPlugin: enabled in root
 |]
 
+-- A pathological setup that lists both modern and legacy plugins.
+sbtBothModernAndLegacy :: Text
+sbtBothModernAndLegacy =
+  [r|[info] welcome to sbt 1.9.7 (Eclipse Adoptium Java 11.0.21)
+[info] In file:/Users/test/project/
+[info]   sbt.plugins.CorePlugin: enabled in root
+[info]   sbt.plugins.IvyPlugin: enabled in root
+[info]   sbt.plugins.JvmPlugin: enabled in root
+[info]   sbt.plugins.DependencyTreePlugin: enabled in root
+[info]   net.virtualvoid.sbt.graph.DependencyGraphPlugin: enabled in root
+|]
+
 sbtNoPlugins :: Text
 sbtNoPlugins =
   [r|[info] welcome to sbt 1.9.7 (Eclipse Adoptium Java 11.0.21)
@@ -108,3 +177,28 @@ sbtNoPlugins =
 [info]   sbt.plugins.IvyPlugin: enabled in root
 [info]   sbt.plugins.JvmPlugin: enabled in root
 |]
+
+-- User-disabled MiniDependencyTreePlugin (e.g. `disablePlugins(MiniDependencyTreePlugin)`
+-- in build.sbt). The FQCN appears on a ": disabled in" line — detection
+-- must reject it.
+sbtDisabledMiniPlugin :: Text
+sbtDisabledMiniPlugin =
+  [r|[info] welcome to sbt 1.9.7 (Eclipse Adoptium Java 11.0.21)
+[info] In file:/Users/test/project/
+[info]   sbt.plugins.CorePlugin: enabled in root
+[info]   sbt.plugins.IvyPlugin: enabled in root
+[info]   sbt.plugins.JvmPlugin: enabled in root
+[info]   sbt.plugins.MiniDependencyTreePlugin: disabled in root
+|]
+
+-- User-disabled modern DependencyTreePlugin. Routing to the uppercase task
+-- would fail because the plugin isn't active.
+sbtDisabledModernPlugin :: Text
+sbtDisabledModernPlugin =
+  [r|[info] welcome to sbt 1.11.5 (Eclipse Adoptium Java 17.0.10)
+[info] In file:/Users/test/project/
+[info]   sbt.plugins.CorePlugin: enabled in root
+[info]   sbt.plugins.IvyPlugin: enabled in root
+[info]   sbt.plugins.JvmPlugin: enabled in root
+[info]   sbt.plugins.DependencyTreePlugin: disabled in root
+|]