diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b8d932e..b602c5d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -28,8 +28,8 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Check out the target repository
+        uses: actions/checkout@v6
 
       # Check syntax of all CIF files
       - name: Check CIF syntax
@@ -42,38 +42,38 @@ jobs:
     needs: syntax
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Check out the target repository
+        uses: actions/checkout@v6
 
-      - name: Checkout the DDLm reference dictionary
-        uses: actions/checkout@v4
+      - name: Check out the DDLm reference dictionary
+        uses: actions/checkout@v6
         with:
           repository: COMCIFS/DDLm
           path: cif-dictionaries/DDLm
 
-      - name: Checkout enumeration templates
-        uses: actions/checkout@v4
+      - name: Check out enumeration templates
+        uses: actions/checkout@v6
         with:
           repository: COMCIFS/Enumeration_Templates
           path: cif-dictionaries/Enumeration_Templates
 
-      - name: Checkout attribute templates
-        uses: actions/checkout@v4
+      - name: Check out attribute templates
+        uses: actions/checkout@v6
         with:
           repository: COMCIFS/Attribute_Templates
           path: cif-dictionaries/Attribute_Templates
 
-      - name: Checkout the coreCIF dictionary
-        uses: actions/checkout@v4
+      - name: Check out the coreCIF dictionary
+        uses: actions/checkout@v6
         with:
           repository: COMCIFS/cif_core
           path: cif-dictionaries/cif_core
 
-      - name: Checkout the multiblockCIF dictionary
-        uses: actions/checkout@v4
+      - name: Check out the multiblock coreCIF dictionary
+        uses: actions/checkout@v6
         with:
-          repository: COMCIFS/MultiBlock_Dictionary
-          path: cif-dictionaries/MultiBlock_Dictionary
+          repository: COMCIFS/cif_multiblock
+          path: cif-dictionaries/cif_multiblock
 
       - name: Run dictionary validity checks
         uses: COMCIFS/dictionary_check_action@main
diff --git a/cif_img.dic b/cif_img.dic
index 0fa87c3..76f8606 100644
--- a/cif_img.dic
+++ b/cif_img.dic
@@ -5,7 +5,7 @@ data_CIF_IMG
     _dictionary.title             CIF_IMG
     _dictionary.class             Instance
     _dictionary.version           1.8.9
-    _dictionary.date              2026-01-19
+    _dictionary.date              2026-05-03
     _dictionary.uri               https://github.com/COMCIFS/imgCIF/cif_img.dic
     _dictionary.ddl_conformance   3.14.0
     _dictionary.namespace         Ddlm
@@ -12107,7 +12107,7 @@ save_
 ;
        Pick up minor type corrections from 1.8.9 dcitionary
 ;
-         1.8.9                    2026-01-19
+         1.8.9                    2026-05-03
 ;   Addition of missing diffrn.id pointers
 
     + Add _diffrn_detector_element.diffrn_id