diff --git a/README.md b/README.md
index 2b9476ae..caf1ca06 100644
--- a/README.md
+++ b/README.md
@@ -198,7 +198,7 @@ Second, we use the `AuthorizedKeysCommand` configuration option in `sshd_config`
 | Linux            | ✅        | ✅     |  Ubuntu 24.04.1 LTS    | -                       |
 | Linux            | ✅        | ✅     |  Centos 9              | -                       |
 | Linux            | ✅        | ✅     |  Arch Linux            | -                       |
-| Linux            | ✅        | ✅     |  openSUSE Tumbleweed   | -                       |
+| Linux            | ✅        | ✅     |  opensuse leap 16   | -                       |
 | macOS            | ❌        | ❌     |  -                     | Likely                  |
 | Windows11        | ❌        | ❌     |  -                     | Likely                  |
 
diff --git a/test/integration/openssh_version_test.go b/test/integration/openssh_version_test.go
index 9f155ffd..5191f7ce 100644
--- a/test/integration/openssh_version_test.go
+++ b/test/integration/openssh_version_test.go
@@ -61,7 +61,7 @@ func TestOpenSSHVersionDetection(t *testing.T) {
 		},
 		{
 			name:           "SUSE",
-			containerImage: "opensuse/tumbleweed:latest",
+			containerImage: "opensuse/leap:16.0",
 			setupCommands: []string{
 				"zypper refresh",
 				"zypper install -y openssh sed",
diff --git a/test/integration/ssh_server/arch_opkssh.Dockerfile b/test/integration/ssh_server/arch_opkssh.Dockerfile
index e4fae261..22e3ccaf 100644
--- a/test/integration/ssh_server/arch_opkssh.Dockerfile
+++ b/test/integration/ssh_server/arch_opkssh.Dockerfile
@@ -16,7 +16,7 @@ ARG ISSUER_PORT="9998"
 RUN go build -v -o opksshbuild
 
 # Stage 2: Create a minimal ArchLinux-based image
-FROM quay.io/archlinux/archlinux:latest@sha256:4524236733437ff1f35531147aa444b32f674d9f328aebe06d3511be575c80a3
+FROM quay.io/archlinux/archlinux:latest
 
 # Install dependencies required for runtime (e.g., SSH server)
 RUN pacman -Syu --noconfirm && \
diff --git a/test/integration/ssh_server/centos_opkssh.Dockerfile b/test/integration/ssh_server/centos_opkssh.Dockerfile
index 1d5171ef..5e47cc90 100644
--- a/test/integration/ssh_server/centos_opkssh.Dockerfile
+++ b/test/integration/ssh_server/centos_opkssh.Dockerfile
@@ -16,7 +16,7 @@ ARG ISSUER_PORT="9998"
 RUN go build -v -o opksshbuild
 
 # Stage 2: Create a minimal CentOS-based image
-FROM quay.io/centos/centos:stream9@sha256:0bf070f10582acaa3c415280f769797025763c8a8e6509a5883592d0872a56d6
+FROM quay.io/centos/centos:stream9
 # Install dependencies required for runtime (e.g., SSH server)
 RUN dnf update -y && \
     dnf install -y sudo openssh-server openssh-clients telnet wget jq && \
diff --git a/test/integration/ssh_server/opensuse_opkssh.Dockerfile b/test/integration/ssh_server/opensuse_opkssh.Dockerfile
index e7a342d3..0c01c7ba 100644
--- a/test/integration/ssh_server/opensuse_opkssh.Dockerfile
+++ b/test/integration/ssh_server/opensuse_opkssh.Dockerfile
@@ -15,8 +15,8 @@ COPY . ./
 ARG ISSUER_PORT="9998"
 RUN go build -v -o opksshbuild
 
-# Stage 2: Create a minimal openSUSE-Tumbleweed-based image
-FROM opensuse/tumbleweed:latest@sha256:c13ace4cd56d5d5e57885672ea75d91c3320998405b0305a1adef4a1a423a9d9
+# Stage 2: Create a minimal opensuse leap:16 image
+FROM opensuse/leap:16.0
 
 # Install dependencies required for runtime (e.g., SSH server)
 RUN zypper refresh && \
diff --git a/test/integration/ssh_server/ubuntu.Dockerfile b/test/integration/ssh_server/ubuntu.Dockerfile
index 62d8797d..175b2cbc 100644
--- a/test/integration/ssh_server/ubuntu.Dockerfile
+++ b/test/integration/ssh_server/ubuntu.Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:noble@sha256:c35e29c9450151419d9448b0fd75374fec4fff364a27f176fb458d472dfc9e54
+FROM ubuntu:noble
 
 # Update/Upgrade
 RUN apt-get update -y && apt-get upgrade -y