diff --git a/.github/workflows/build-pgpool.yml b/.github/workflows/build-pgpool.yml
index 60f9b28..9cc6978 100644
--- a/.github/workflows/build-pgpool.yml
+++ b/.github/workflows/build-pgpool.yml
@@ -59,7 +59,7 @@ jobs:
     needs: docker
     runs-on: ubuntu-latest
     container:
-      image: quay.io/singularity/singularity:v3.11.4
+      image: quay.io/singularity/singularity:v4.1.0
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index dd2a059..c0b1f21 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -57,7 +57,7 @@ jobs:
     needs: docker
     runs-on: ubuntu-latest
     container:
-      image: quay.io/singularity/singularity:v3.11.4
+      image: quay.io/singularity/singularity:v4.1.0
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/release-pgpool.yml b/.github/workflows/release-pgpool.yml
index 838cb8d..e831a1f 100644
--- a/.github/workflows/release-pgpool.yml
+++ b/.github/workflows/release-pgpool.yml
@@ -66,7 +66,7 @@ jobs:
     needs: docker
     runs-on: ubuntu-latest
     container:
-      image: quay.io/singularity/singularity:v3.11.4
+      image: quay.io/singularity/singularity:v4.1.0
     strategy:
       fail-fast: false
       matrix:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c278b27..093473a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -92,7 +92,7 @@ jobs:
     needs: docker
     runs-on: ubuntu-latest
     container:
-      image: quay.io/singularity/singularity:v3.11.4
+      image: quay.io/singularity/singularity:v4.1.0
     strategy:
       fail-fast: false
       matrix: