diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 12be1e585..be221b63c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -36,7 +36,7 @@ jobs:
             echo "::set-output name=VFB_PDB_SERVER::http://pdb:7474";
             echo "::set-output name=VFB_OWL_SERVER::http://owl:8080/kbs/vfb/";
             echo "::set-output name=VFB_R_SERVER::http://ocpu:80/ocpu/library/vfbr/R/vfb_nblast";
-            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.virtualflybrain.org";
+            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.v4.virtualflybrain.org";
             echo "::set-output name=SOLR_SERVER::https://solr.virtualflybrain.org/solr/ontology/select";
             echo "::set-output name=BUILD_TYPE::release";
           elif [ "${GITHUB_REF#refs/heads/}" == debug ] || [ "${GITHUB_REF#refs/heads/}" == pipeline2 ] || [ "${GITHUB_REF#refs/heads/}" == vfb_geppetto_application ] || [ "${GITHUB_REF#refs/heads/}" == development ] ; then
@@ -60,7 +60,7 @@ jobs:
             echo "::set-output name=VFB_PDB_SERVER::http://pdb:7474";
             echo "::set-output name=VFB_OWL_SERVER::http://owl:8080/kbs/vfb/";
             echo "::set-output name=VFB_R_SERVER::http://ocpu:80/ocpu/library/vfbr/R/vfb_nblast";
-            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.virtualflybrain.org";
+            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.v4.virtualflybrain.org";
             echo "::set-output name=SOLR_SERVER::https://solr.virtualflybrain.org/solr/ontology/select";
             echo "::set-output name=BUILD_TYPE::release";
           fi
@@ -69,8 +69,8 @@ jobs:
         shell: bash
         run: if [ "${GITHUB_REF#refs/heads/}" == master ] ; then
             echo "::debug::Set to master setup";
-            echo "::set-output name=VFB_PDB_SERVER::http://pdb.virtualflybrain.org";
-            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.virtualflybrain.org";
+            echo "::set-output name=VFB_PDB_SERVER::http://pdb.v4.virtualflybrain.org";
+            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.v4.virtualflybrain.org";
             echo "::set-output name=VFB_OWL_SERVER::http://owl.virtualflybrain.org/kbs/vfb/";
             echo "::set-output name=VFB_R_SERVER::http://r.virtualflybrain.org/ocpu/library/vfbr/R/vfb_nblast";
             echo "::set-output name=SOLR_SERVER::https://solr.virtualflybrain.org/solr/ontology/select";
@@ -93,10 +93,10 @@ jobs:
             echo "::set-output name=BUILD_TYPE::release";
           else 
             echo "::debug::Set to default setup";
-            echo "::set-output name=VFB_PDB_SERVER::http://pdb.virtualflybrain.org";
+            echo "::set-output name=VFB_PDB_SERVER::http://pdb.v4.virtualflybrain.org";
             echo "::set-output name=VFB_OWL_SERVER::http://owl.virtualflybrain.org/kbs/vfb/";
             echo "::set-output name=VFB_R_SERVER::http://r.virtualflybrain.org/ocpu/library/vfbr/R/vfb_nblast";
-            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.virtualflybrain.org";
+            echo "::set-output name=VFB_TREE_PDB_SERVER::https://pdb.v4.virtualflybrain.org";
             echo "::set-output name=SOLR_SERVER::https://solr.virtualflybrain.org/solr/ontology/select";
             echo "::set-output name=BUILD_TYPE::release";
           fi