diff --git a/nodepool/nodepool.yaml b/nodepool/nodepool.yaml
index dfeaeda17a..b421078bcc 100644
--- a/nodepool/nodepool.yaml
+++ b/nodepool/nodepool.yaml
@@ -1091,6 +1091,7 @@ diskimages:
     release: jessie
     env-vars:
       TMPDIR: /opt/dib_tmp
+      DIB_CHECKSUM: '1'
       DIB_IMAGE_CACHE: /opt/dib_cache
       DIB_APT_LOCAL_CACHE: '0'
       DIB_DISABLE_APT_CLEANUP: '1'
@@ -1109,6 +1110,7 @@ diskimages:
     release: precise
     env-vars:
       TMPDIR: /opt/dib_tmp
+      DIB_CHECKSUM: '1'
       DIB_IMAGE_CACHE: /opt/dib_cache
       DIB_APT_LOCAL_CACHE: '0'
       DIB_DISABLE_APT_CLEANUP: '1'
@@ -1128,6 +1130,7 @@ diskimages:
     release: trusty
     env-vars:
       TMPDIR: /opt/dib_tmp
+      DIB_CHECKSUM: '1'
       DIB_IMAGE_CACHE: /opt/dib_cache
       DIB_APT_LOCAL_CACHE: '0'
       DIB_DISABLE_APT_CLEANUP: '1'
@@ -1147,6 +1150,7 @@ diskimages:
     release: xenial
     env-vars:
       TMPDIR: /opt/dib_tmp
+      DIB_CHECKSUM: '1'
       DIB_IMAGE_CACHE: /opt/dib_cache
       DIB_APT_LOCAL_CACHE: '0'
       DIB_DISABLE_APT_CLEANUP: '1'
@@ -1165,6 +1169,7 @@ diskimages:
       - stackviz
     env-vars:
       TMPDIR: /opt/dib_tmp
+      DIB_CHECKSUM: '1'
       DIB_IMAGE_CACHE: /opt/dib_cache
       QEMU_IMG_OPTIONS: compat=0.10
   - name: fedora-23
@@ -1183,6 +1188,7 @@ diskimages:
     release: 23
     env-vars:
       TMPDIR: /opt/dib_tmp
+      DIB_CHECKSUM: '1'
       DIB_IMAGE_CACHE: /opt/dib_cache
       QEMU_IMG_OPTIONS: compat=0.10
   - name: fedora-24
@@ -1202,5 +1208,6 @@ diskimages:
     release: 24
     env-vars:
       TMPDIR: /opt/dib_tmp
+      DIB_CHECKSUM: '1'
       DIB_IMAGE_CACHE: /opt/dib_cache
       QEMU_IMG_OPTIONS: compat=0.10