diff --git a/.webhook_bridge/pipeline-build-hash.yaml b/.webhook_bridge/pipeline-build-hash.yaml
index 2e85e6f..ab4906c 100644
--- a/.webhook_bridge/pipeline-build-hash.yaml
+++ b/.webhook_bridge/pipeline-build-hash.yaml
@@ -122,6 +122,10 @@ spec:
               - "$(params.image-name)-buildcache"
               - --cache-to
               - "$(params.image-name)-buildcache"
+              - --build-arg
+              - "SOURCE_DATE_EPOCH=$(tasks.get-git-commit-time.results.unix-time)"
+              - --build-arg
+              - "NIX_SUBSTITUTERS=http://ncps.nix-pull-through-cache.svc.cluster.local:80 https://cache.nixos.org"
           - name: REGISTRIES_CONF
             value: |
               unqualified-search-registries = ["docker.io"]
diff --git a/.webhook_bridge/pipeline-foreign-document-test.yaml b/.webhook_bridge/pipeline-foreign-document-test.yaml
index 85509e7..651ef10 100644
--- a/.webhook_bridge/pipeline-foreign-document-test.yaml
+++ b/.webhook_bridge/pipeline-foreign-document-test.yaml
@@ -122,6 +122,10 @@ spec:
               - "$(params.image-name)-buildcache"
               - --cache-to
               - "$(params.image-name)-buildcache"
+              - --build-arg
+              - "SOURCE_DATE_EPOCH=$(tasks.get-git-commit-time.results.unix-time)"
+              - --build-arg
+              - "NIX_SUBSTITUTERS=http://ncps.nix-pull-through-cache.svc.cluster.local:80 https://cache.nixos.org"
           - name: REGISTRIES_CONF
             value: |
               unqualified-search-registries = ["docker.io"]
diff --git a/.webhook_bridge/pipeline-format.yaml b/.webhook_bridge/pipeline-format.yaml
index 4a9e41e..8684d86 100644
--- a/.webhook_bridge/pipeline-format.yaml
+++ b/.webhook_bridge/pipeline-format.yaml
@@ -122,6 +122,10 @@ spec:
               - "$(params.image-name)-buildcache"
               - --cache-to
               - "$(params.image-name)-buildcache"
+              - --build-arg
+              - "SOURCE_DATE_EPOCH=$(tasks.get-git-commit-time.results.unix-time)"
+              - --build-arg
+              - "NIX_SUBSTITUTERS=http://ncps.nix-pull-through-cache.svc.cluster.local:80 https://cache.nixos.org"
           - name: REGISTRIES_CONF
             value: |
               unqualified-search-registries = ["docker.io"]
diff --git a/.webhook_bridge/pipeline-rust-clippy.yaml b/.webhook_bridge/pipeline-rust-clippy.yaml
index 553a3aa..1964d25 100644
--- a/.webhook_bridge/pipeline-rust-clippy.yaml
+++ b/.webhook_bridge/pipeline-rust-clippy.yaml
@@ -122,6 +122,10 @@ spec:
               - "$(params.image-name)-buildcache"
               - --cache-to
               - "$(params.image-name)-buildcache"
+              - --build-arg
+              - "SOURCE_DATE_EPOCH=$(tasks.get-git-commit-time.results.unix-time)"
+              - --build-arg
+              - "NIX_SUBSTITUTERS=http://ncps.nix-pull-through-cache.svc.cluster.local:80 https://cache.nixos.org"
           - name: REGISTRIES_CONF
             value: |
               unqualified-search-registries = ["docker.io"]
diff --git a/.webhook_bridge/pipeline-rust-test.yaml b/.webhook_bridge/pipeline-rust-test.yaml
index ea4378b..e60cfbc 100644
--- a/.webhook_bridge/pipeline-rust-test.yaml
+++ b/.webhook_bridge/pipeline-rust-test.yaml
@@ -122,6 +122,10 @@ spec:
               - "$(params.image-name)-buildcache"
               - --cache-to
               - "$(params.image-name)-buildcache"
+              - --build-arg
+              - "SOURCE_DATE_EPOCH=$(tasks.get-git-commit-time.results.unix-time)"
+              - --build-arg
+              - "NIX_SUBSTITUTERS=http://ncps.nix-pull-through-cache.svc.cluster.local:80 https://cache.nixos.org"
           - name: REGISTRIES_CONF
             value: |
               unqualified-search-registries = ["docker.io"]