diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index 81839a3..401c501 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -37,7 +37,6 @@ confinement: strict
 platforms:
   amd64:
   arm64:
-  riscv64:
 
 apps:
   ecrou:
@@ -86,17 +85,25 @@ parts:
 
   libkrunfw:
     plugin: nil
-    # libkrunfw5 ships only in stonking universe today,
-    # not in any LTS base, so the .deb comes straight from the pool.
-    # The library embeds its kernel and has no external symbols, so
-    # it runs on the base's older glibc.
+    # libkrunfw5 ships only in stonking universe today, not in any LTS
+    # base, so the .deb comes straight from the pool — one flavor per
+    # target arch. The library embeds its kernel and has no external
+    # symbols, so it runs on the base's older glibc. The pool carries
+    # no riscv64 build, and libkrun does not target riscv64, so the
+    # snap builds for amd64 and arm64 only.
     build-packages: [curl]
     override-pull: |
+      arch="$CRAFT_ARCH_BUILD_FOR"
+      case "$arch" in
+        amd64) digest="924cd545080aaf5da66740d12a51b7a5cbd9a5c0b502d21cbef9bc82bf1c8b6b" ;;
+        arm64) digest="9570e82feac79fd41a6a9674cc02a9b2f09948ac30ad480d05fc73a957843e56" ;;
+        *) echo "no libkrunfw5 build for $arch in the Ubuntu pool" >&2; exit 1 ;;
+      esac
       curl -fL -o libkrunfw5.deb \
-        https://archive.ubuntu.com/ubuntu/pool/universe/libk/libkrunfw/libkrunfw5_5.5.0+ds-1_amd64.deb
-      echo "924cd545080aaf5da66740d12a51b7a5cbd9a5c0b502d21cbef9bc82bf1c8b6b  libkrunfw5.deb" | sha256sum -c
+        "https://archive.ubuntu.com/ubuntu/pool/universe/libk/libkrunfw/libkrunfw5_5.5.0+ds-1_${arch}.deb"
+      echo "$digest  libkrunfw5.deb" | sha256sum -c
     override-build: |
       dpkg -x libkrunfw5.deb unpack
-      install -Dm755 unpack/usr/lib/x86_64-linux-gnu/libkrunfw.so.5.5.0 \
+      install -Dm755 "unpack/usr/lib/${CRAFT_ARCH_TRIPLET_BUILD_FOR}/libkrunfw.so.5.5.0" \
         "$CRAFT_PART_INSTALL/lib/libkrunfw.so.5.5.0"
       ln -s libkrunfw.so.5.5.0 "$CRAFT_PART_INSTALL/lib/libkrunfw.so.5"