diff --git a/.github/workflows/backend.yml b/.github/workflows/backend.yml
index b844e35f9..b6273b713 100644
--- a/.github/workflows/backend.yml
+++ b/.github/workflows/backend.yml
@@ -19,7 +19,7 @@ on:
 
 env:
   DOCKER_IMAGE_NAME: ghcr.io/loculus-project/backend
-  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true}}
+  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true && 'true' || 'false' }}
 
 concurrency:
   group: ci-${{ github.ref == 'refs/heads/main' && github.run_id || github.ref }}-backend
diff --git a/.github/workflows/config-preprocessor-build.yml b/.github/workflows/config-preprocessor-build.yml
index c39823c17..ae218e269 100644
--- a/.github/workflows/config-preprocessor-build.yml
+++ b/.github/workflows/config-preprocessor-build.yml
@@ -19,7 +19,7 @@ on:
 
 env:
   DOCKER_IMAGE_NAME: ghcr.io/loculus-project/config-processor
-  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm }}
+  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true && 'true' || 'false' }}
 
 defaults:
   run:
diff --git a/.github/workflows/dummyPreprocessing.yml b/.github/workflows/dummyPreprocessing.yml
index a537b6dcd..1735d3b9a 100644
--- a/.github/workflows/dummyPreprocessing.yml
+++ b/.github/workflows/dummyPreprocessing.yml
@@ -19,7 +19,7 @@ on:
 
 env:
   DOCKER_IMAGE_NAME: ghcr.io/loculus-project/preprocessing-dummy
-  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm }}
+  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true && 'true' || 'false' }}
 
 concurrency:
   group: ci-${{ github.ref == 'refs/heads/main' && github.run_id || github.ref }}-preprocessing-dumm-${{github.event.inputs.build_arm}}y
diff --git a/.github/workflows/ingest.yml b/.github/workflows/ingest.yml
index b3449f3bc..a1d6cf057 100644
--- a/.github/workflows/ingest.yml
+++ b/.github/workflows/ingest.yml
@@ -18,7 +18,7 @@ on:
 
 env:
   DOCKER_IMAGE_NAME: ghcr.io/loculus-project/ingest
-  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm }}
+  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true && 'true' || 'false' }}
 
 concurrency:
   group: ci-${{ github.ref == 'refs/heads/main' && github.run_id || github.ref }}-ingest-${{github.event.inputs.build_arm}}
diff --git a/.github/workflows/keycloakify-build.yml b/.github/workflows/keycloakify-build.yml
index 9f4eb03f6..fc99dd249 100644
--- a/.github/workflows/keycloakify-build.yml
+++ b/.github/workflows/keycloakify-build.yml
@@ -18,7 +18,7 @@ on:
         required: false
 env:
   DOCKER_IMAGE_NAME: ghcr.io/loculus-project/keycloakify
-  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm }}
+  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true && 'true' || 'false' }}
 
 concurrency:
   group: ci-${{ github.ref == 'refs/heads/main' && github.run_id || github.ref }}-keycloak-buil-${{github.event.inputs.build_arm}}d
diff --git a/.github/workflows/preprocessing-nextclade.yml b/.github/workflows/preprocessing-nextclade.yml
index e4d3420a4..b0296dd98 100644
--- a/.github/workflows/preprocessing-nextclade.yml
+++ b/.github/workflows/preprocessing-nextclade.yml
@@ -19,7 +19,7 @@ on:
 
 env:
   DOCKER_IMAGE_NAME: ghcr.io/loculus-project/preprocessing-nextclade
-  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm }}
+  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true && 'true' || 'false' }}
 
 concurrency:
   group: ci-${{ github.ref == 'refs/heads/main' && github.run_id || github.ref }}-preprocessing-nextclade-${{github.event.inputs.build_arm}}
diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
index 906b767dd..8ac6c5955 100644
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@@ -18,7 +18,7 @@ on:
         required: false
 env:
   DOCKER_IMAGE_NAME: ghcr.io/loculus-project/website
-  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm }}
+  BUILD_ARM: ${{ github.ref == 'refs/heads/main' || github.event.inputs.build_arm == 'true' || github.event.inputs.build_arm == true && 'true' || 'false' }}
 
 concurrency:
   group: ci-${{ github.ref == 'refs/heads/main' && github.run_id || github.ref }}-website-${{github.event.inputs.build_arm}}