diff --git a/.github/workflows/ci-docker.yml b/.github/workflows/ci-docker.yml
index a01ad2d05..590cb60c6 100644
--- a/.github/workflows/ci-docker.yml
+++ b/.github/workflows/ci-docker.yml
@@ -32,8 +32,18 @@ jobs:
       with:
         submodules: true
 
+    - name: OS information for ${{ matrix.tag }}
+      uses: mosteo-actions/docker-run@v2
+      with:
+        image: ghcr.io/alire-project/docker/gnat:${{matrix.tag}}
+        command: |
+          lsb_release -a || \
+          cat /etc/os-release || \
+          cat /etc/system-release || \
+          echo "No lsb_release information"
+
     - name: Run test script (${{ matrix.tag }})
-      uses: mosteo-actions/docker-run@v1
+      uses: mosteo-actions/docker-run@v2
       with:
         image: ghcr.io/alire-project/docker/gnat:${{matrix.tag}}
         command: scripts/ci-github.sh
diff --git a/alire.toml b/alire.toml
index 2cbbc4cad..e6267d012 100644
--- a/alire.toml
+++ b/alire.toml
@@ -50,6 +50,7 @@ windows = { ALIRE_OS = "windows" }
 
 # Some dependencies require precise versions during the development cycle:
 [[pins]]
+
 [pins.aaa]
 url    = "https://github.com/mosteo/aaa"
 commit = "0c3b440ac183c450345d4a67d407785678779aae"
@@ -60,7 +61,7 @@ commit = "da4e59c382ceb0de6733d571ecbab7ea4919b33d"
 
 [pins.c_strings]
 url    = "https://github.com/mosteo/cstrings"
-commit = "e5b1931d47b9fee273177773fb5e3f8979bc6076"
+commit = "e4d58ad90bf32bc44304197e5906a519f5a9a7bf"
 
 [pins.clic]
 url    = "https://github.com/alire-project/clic"
@@ -68,7 +69,7 @@ commit = "56bbdc008e16996b6f76e443fd0165a240de1b13"
 
 [pins.den]
 url    = "https://github.com/mosteo/den"
-commit = "1f0fe7df0e479e1bf86edd607ffea6bfddb9352e"
+commit = "74ec97ba66b56dea23a963deef12ad72b5b1c731"
 
 [pins.dirty_booleans]
 url    = "https://github.com/mosteo/dirty_booleans"
diff --git a/deps/cstrings b/deps/cstrings
index e5b1931d4..e4d58ad90 160000
--- a/deps/cstrings
+++ b/deps/cstrings
@@ -1 +1 @@
-Subproject commit e5b1931d47b9fee273177773fb5e3f8979bc6076
+Subproject commit e4d58ad90bf32bc44304197e5906a519f5a9a7bf
diff --git a/deps/den b/deps/den
index 203512fcb..74ec97ba6 160000
--- a/deps/den
+++ b/deps/den
@@ -1 +1 @@
-Subproject commit 203512fcb05ec0e837269f1f156dae513f605077
+Subproject commit 74ec97ba66b56dea23a963deef12ad72b5b1c731
diff --git a/scripts/ci-github.sh b/scripts/ci-github.sh
index 06800270e..55da4a081 100755
--- a/scripts/ci-github.sh
+++ b/scripts/ci-github.sh
@@ -61,9 +61,18 @@ if [ "${INDEX:-}" != "" ]; then
     alr index --name default --add "$INDEX"
 fi
 
+echo ALR SETTINGS (global):
+alr settings --global
+
 echo ALR SEARCH:
 # List releases for the record
-alr -q -d search --list --external
+alr -q -d search --list --external || \
+{
+    echo "Failed to list releases"
+    echo CONTENTS OF INDEXES
+    ls -alFR /root/.config/alire/indexes/
+    exit 1;
+}
 echo ............................
 
 echo TESTSUITE:
diff --git a/src/alire/alire-directories.adb b/src/alire/alire-directories.adb
index ef1de9da6..6f3bb4f09 100644
--- a/src/alire/alire-directories.adb
+++ b/src/alire/alire-directories.adb
@@ -408,6 +408,10 @@ package body Alire.Directories is
       begin
          Stop := False;
 
+         Trace.Debug ("Find_Files_Under:"
+                      & Item.Depth'Image
+                      & " " & Item.Path);
+
          if Max_Depth < Natural'Last and then Item.Depth > Max_Depth then
             Enter := False;
          end if;