diff --git a/.github/workflows/macos-java.yml b/.github/workflows/macos-java.yml
index 27c793c13..7d8cf0d7e 100644
--- a/.github/workflows/macos-java.yml
+++ b/.github/workflows/macos-java.yml
@@ -86,13 +86,6 @@ jobs:
         run: |
           cd _build
           sudo make install
-          find /opt/cobol > install.log
-
-      - name: Upload install.log
-        uses: actions/upload-artifact@v4
-        with:
-          name: install-${{ matrix.os }}.log
-          path: _build/install.log
 
       - name: check
         if: matrix.os == 'macos-latest'
diff --git a/.github/workflows/ubuntu-java.yml b/.github/workflows/ubuntu-java.yml
index 0b1548bb2..917feca7a 100644
--- a/.github/workflows/ubuntu-java.yml
+++ b/.github/workflows/ubuntu-java.yml
@@ -95,6 +95,9 @@ jobs:
           make -C _build check                                        \
                          TESTSUITEFLAGS="--recheck --verbose"
 
+      # Note: NIST tests are not performed by this CI workflow: they
+      # do not involve any Java interoperability feature.
+
       - name: Upload testsuite.log
         uses: actions/upload-artifact@v4
         if: failure()
diff --git a/.github/workflows/windows-java.yml b/.github/workflows/windows-java.yml
index d9fce23b3..b9dab2e5e 100644
--- a/.github/workflows/windows-java.yml
+++ b/.github/workflows/windows-java.yml
@@ -103,11 +103,4 @@ jobs:
       - name: install
         run: |
           make -C _build install
-          find /opt/cobol > _build/install.log
         shell: msys2 {0}
-
-      - name: Upload install.log
-        uses: actions/upload-artifact@v4
-        with:
-          name: install-${{matrix.sys}}.log
-          path: _build/install.log