diff --git a/.github/workflows/dafny_interop_test_vector_net.yml b/.github/workflows/dafny_interop_test_vector_net.yml
index ba84f7fb5..d45f8a61e 100644
--- a/.github/workflows/dafny_interop_test_vector_net.yml
+++ b/.github/workflows/dafny_interop_test_vector_net.yml
@@ -272,7 +272,7 @@ jobs:
           mkdir -p $NET_41_VECTOR_PATH
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_mpl-${{inputs.mpl-dafny}}_esdk-${{inputs.esdk-dafny}}_vectors
           path: AwsEncryptionSDK/net41/vectors
diff --git a/.github/workflows/library_interop_keyring_test_vectors.yml b/.github/workflows/library_interop_keyring_test_vectors.yml
index b52b2f61c..899b9ee72 100644
--- a/.github/workflows/library_interop_keyring_test_vectors.yml
+++ b/.github/workflows/library_interop_keyring_test_vectors.yml
@@ -550,7 +550,7 @@ jobs:
           role-duration-seconds: 7200
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_java_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -580,7 +580,7 @@ jobs:
           role-duration-seconds: 7200
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_net_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -610,7 +610,7 @@ jobs:
           role-duration-seconds: 7200
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_rust_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -640,7 +640,7 @@ jobs:
           role-duration-seconds: 7200
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_python_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -670,7 +670,7 @@ jobs:
           role-duration-seconds: 7200
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_go_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -700,7 +700,7 @@ jobs:
           role-duration-seconds: 7200
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_c_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
diff --git a/.github/workflows/library_interop_mkp_test_vectors.yml b/.github/workflows/library_interop_mkp_test_vectors.yml
index 46e5905c3..6991ede35 100644
--- a/.github/workflows/library_interop_mkp_test_vectors.yml
+++ b/.github/workflows/library_interop_mkp_test_vectors.yml
@@ -389,7 +389,7 @@ jobs:
           role-duration-seconds: 3600
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_java_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -408,7 +408,7 @@ jobs:
           role-duration-seconds: 3600
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_net_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -427,7 +427,7 @@ jobs:
           role-duration-seconds: 3600
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_rust_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -446,7 +446,7 @@ jobs:
           role-duration-seconds: 3600
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_python_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -465,7 +465,7 @@ jobs:
           role-duration-seconds: 3600
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_python_mkp_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -484,7 +484,7 @@ jobs:
           role-duration-seconds: 3600
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_java_mkp_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -503,7 +503,7 @@ jobs:
           role-duration-seconds: 3600
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_go_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
@@ -560,7 +560,7 @@ jobs:
           npm install fast-xml-parser
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_${{matrix.encrypting_language}}_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/
@@ -625,7 +625,7 @@ jobs:
           npm install fast-xml-parser
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           # we can pick any manifest we want. i choose java because it runs 6 billion devices
           name: ubuntu-22.04_vector_artifact_java_legacy_format_${{github.sha}}
@@ -804,7 +804,7 @@ jobs:
           make transpile_python CORES=$CORES
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact_javascript_legacy_format_${{github.sha}}
           path: ./${{matrix.library}}/runtimes/${{matrix.decrypting_language}}
diff --git a/.github/workflows/library_interop_tests.yml b/.github/workflows/library_interop_tests.yml
index 1677ea066..a2544d2b4 100644
--- a/.github/workflows/library_interop_tests.yml
+++ b/.github/workflows/library_interop_tests.yml
@@ -259,7 +259,7 @@ jobs:
           mkdir -p $NET_41_VECTOR_PATH
 
       - name: Download Encrypt Manifest Artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: ${{matrix.os}}_vector_artifact
           path: AwsEncryptionSDK/net41/vectors