diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 8408df474..296da8211 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -119,14 +119,14 @@ jobs:
         if: always()
         run: sha256sum ola-*.tar.gz
       - name: Upload source tree artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: always()
         with:
           name: ola-${{ matrix.id }}-source-tree
           path: ola-${{ matrix.id }}-source-tree.tar.gz
       - name: Upload built artifact
         if: matrix.task == 'distcheck' || matrix.task == 'dist'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ola-${{ matrix.id }}-dist
           path: |
@@ -147,7 +147,7 @@ jobs:
           flag-name: ${{ matrix.id }}
       - name: Upload coverage artifacts
         if: always() && matrix.task == 'coverage'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ola-${{ matrix.id }}-coverage
           path: coverage/
@@ -165,7 +165,7 @@ jobs:
           - id: "distcheck-debian-stable-amd64-clang"
     steps:
       - name: Download built source tree archive
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-${{ matrix.id }}-source-tree
           path: .
diff --git a/.github/workflows/debian.yml b/.github/workflows/debian.yml
index 0ae5317ba..7fff3d801 100644
--- a/.github/workflows/debian.yml
+++ b/.github/workflows/debian.yml
@@ -53,7 +53,7 @@ jobs:
         shell: bash
         run: find . -type f -exec sha256sum {} \;
         working-directory: built
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         if: always()
         with:
           name: ola-built-debian-${{ matrix.image_tag }}-${{ matrix.architecture }}
@@ -72,7 +72,7 @@ jobs:
     steps:
       - uses: actions/checkout@master
       - name: Download build artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-built-debian-${{ matrix.image_tag }}-${{ matrix.architecture }}
           path: built
@@ -85,7 +85,7 @@ jobs:
         run: apt-get -y install autopkgtest
       - name: Test
         run: autopkgtest --output-dir=test-output built/*ges -- null
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         if: always() # Always upload the test output, even on failed tests
         with:
           name: ola-test-output-debian-${{ matrix.image_tag }}-${{ matrix.architecture }}
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 0c49e768a..12d892fb4 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -56,7 +56,7 @@ jobs:
           tar --exclude=ola-debian-stable-built-source-tree.tar.gz -cvzf ola-debian-stable-built-source-tree.tar.gz .
       - name: SHA256 artifact archive
         run: sha256sum ola-debian-stable-built-source-tree.tar.gz
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: ola-debian-stable-built-source-tree
           path: ola-debian-stable-built-source-tree.tar.gz
@@ -67,7 +67,7 @@ jobs:
     needs: build
     steps:
       - name: Download built source tree archive
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-debian-stable-built-source-tree
           path: .
@@ -97,7 +97,7 @@ jobs:
     needs: build
     steps:
       - name: Download built source tree archive
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-debian-stable-built-source-tree
           path: .
@@ -123,7 +123,7 @@ jobs:
     needs: build
     steps:
       - name: Download built source tree archive
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-debian-stable-built-source-tree
           path: .
@@ -160,7 +160,7 @@ jobs:
     needs: build
     steps:
       - name: Download built source tree archive
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-debian-stable-built-source-tree
           path: .
@@ -197,7 +197,7 @@ jobs:
     needs: build
     steps:
       - name: Download built source tree archive
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-debian-stable-built-source-tree
           path: .
@@ -226,7 +226,7 @@ jobs:
     needs: build
     steps:
       - name: Download built source tree archive
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: ola-debian-stable-built-source-tree
           path: .
diff --git a/plugins/osc/OSCPlugin.cpp b/plugins/osc/OSCPlugin.cpp
index ac82aca61..26d610fa5 100644
--- a/plugins/osc/OSCPlugin.cpp
+++ b/plugins/osc/OSCPlugin.cpp
@@ -134,7 +134,7 @@ string OSCPlugin::Description() const {
 "--------------------------------\n"
 "\n"
 "This plugin allows OLA to send and receive OSC\n"
-"( http://www.opensoundcontrol.org/ ) messages.\n"
+"( https://opensoundcontrol.stanford.edu/ ) messages.\n"
 "\n"
 "OLA uses the blob type for transporting DMX data.\n"
 "\n"
diff --git a/plugins/osc/README b/plugins/osc/README
index ba8ce3849..8bdbe6d6f 100644
--- a/plugins/osc/README
+++ b/plugins/osc/README
@@ -14,9 +14,9 @@ Before we begin you should do the following:
  * Have an understanding of the map & vector classes from the STL -
    http://www.sgi.com/tech/stl/ or http://www.cplusplus.com/reference/stl/ .
  * Know something about the OSC specification:
-   http://opensoundcontrol.org/spec-1_0 . You don't need to know the wire format
-   for the OSC messages. but you should at least recognize OSC addresses and
-   know the different data types in a message.
+   https://opensoundcontrol.stanford.edu/spec-1_0.html . You don't need to know
+   the wire format for the OSC messages. but you should at least recognize OSC
+   addresses and know the different data types in a message.
  * Look at the liblo site (http://liblo.sourceforge.net/ ) and read the
    examples.
  * Get familiar with the string class