diff --git a/schutzbot/deploy.sh b/schutzbot/deploy.sh
index cbe10decb..b3546a53f 100755
--- a/schutzbot/deploy.sh
+++ b/schutzbot/deploy.sh
@@ -15,7 +15,7 @@ localectl set-locale LANG=en_US.UTF-8
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 function retry {
diff --git a/schutzbot/mockbuild.sh b/schutzbot/mockbuild.sh
index fdd018b3c..1770d6eb5 100755
--- a/schutzbot/mockbuild.sh
+++ b/schutzbot/mockbuild.sh
@@ -3,7 +3,7 @@ set -euo pipefail
 
 # Colorful output.
 function greenprint {
-  echo -e "\033[1;32m${1}\033[0m"
+  echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Get OS and architecture details.
diff --git a/schutzbot/prepare-rhel-internal.sh b/schutzbot/prepare-rhel-internal.sh
index d41675461..008bb691e 100755
--- a/schutzbot/prepare-rhel-internal.sh
+++ b/schutzbot/prepare-rhel-internal.sh
@@ -3,7 +3,7 @@ set -euo pipefail
 
 # Colorful output.
 function greenprint {
-  echo -e "\033[1;32m${1}\033[0m"
+  echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 ALL_ARCHES="aarch64 ppc64le s390x x86_64"
diff --git a/test/cases/aws.sh b/test/cases/aws.sh
index 9fee37598..466c881bd 100755
--- a/test/cases/aws.sh
+++ b/test/cases/aws.sh
@@ -5,7 +5,7 @@ source /usr/libexec/osbuild-composer-test/set-env-variables.sh
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Container image used for cloud provider CLI tools
diff --git a/test/cases/azure.sh b/test/cases/azure.sh
index 421d16680..115c942a2 100755
--- a/test/cases/azure.sh
+++ b/test/cases/azure.sh
@@ -9,7 +9,7 @@ HYPER_V_GEN="${HYPER_V_GEN:-V1}"
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Container image used for cloud provider CLI tools
diff --git a/test/cases/filesystem.sh b/test/cases/filesystem.sh
index 77f628fb0..590412a41 100644
--- a/test/cases/filesystem.sh
+++ b/test/cases/filesystem.sh
@@ -17,7 +17,7 @@ fi
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 TEST_UUID=$(uuidgen)
diff --git a/test/cases/installers.sh b/test/cases/installers.sh
index 744693eff..7a6322adb 100755
--- a/test/cases/installers.sh
+++ b/test/cases/installers.sh
@@ -9,7 +9,7 @@ source /usr/libexec/osbuild-composer-test/set-env-variables.sh
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # modify existing kickstart by prepending and appending commands
diff --git a/test/cases/koji.sh b/test/cases/koji.sh
index 4da40e089..4879ddb45 100755
--- a/test/cases/koji.sh
+++ b/test/cases/koji.sh
@@ -8,7 +8,7 @@ source /usr/libexec/osbuild-composer-test/set-env-variables.sh
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Provision the software under test.
diff --git a/test/cases/ostree-ng-og.sh b/test/cases/ostree-ng-og.sh
index e942b8e69..fce5fec10 100644
--- a/test/cases/ostree-ng-og.sh
+++ b/test/cases/ostree-ng-og.sh
@@ -10,7 +10,7 @@ ARCH=$(uname -m)
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Start libvirtd and test it.
diff --git a/test/cases/ostree-ng.sh b/test/cases/ostree-ng.sh
index 468ecee3e..541bf53b3 100755
--- a/test/cases/ostree-ng.sh
+++ b/test/cases/ostree-ng.sh
@@ -9,7 +9,7 @@ source /usr/libexec/osbuild-composer-test/set-env-variables.sh
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Install openshift client
diff --git a/test/cases/ostree-raw-image.sh b/test/cases/ostree-raw-image.sh
index 2fcdf942a..94ade6e0a 100755
--- a/test/cases/ostree-raw-image.sh
+++ b/test/cases/ostree-raw-image.sh
@@ -10,7 +10,7 @@ ARCH=$(uname -m)
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Start libvirtd and test it.
diff --git a/test/cases/ostree-simplified-installer.sh b/test/cases/ostree-simplified-installer.sh
index ffda22129..25b9d3d4d 100755
--- a/test/cases/ostree-simplified-installer.sh
+++ b/test/cases/ostree-simplified-installer.sh
@@ -10,7 +10,7 @@ ARCH=$(uname -m)
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Start firewalld
diff --git a/test/cases/ostree.sh b/test/cases/ostree.sh
index f81878a04..59c862889 100755
--- a/test/cases/ostree.sh
+++ b/test/cases/ostree.sh
@@ -49,7 +49,7 @@ esac
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 function get_build_info() {
diff --git a/test/cases/regression-composer-works-behind-satellite.sh b/test/cases/regression-composer-works-behind-satellite.sh
index 02de8d348..0b7a3778b 100644
--- a/test/cases/regression-composer-works-behind-satellite.sh
+++ b/test/cases/regression-composer-works-behind-satellite.sh
@@ -3,7 +3,7 @@
 set -exuo pipefail
 
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 function generate_certificates {
diff --git a/test/cases/vmware.sh b/test/cases/vmware.sh
index 0c058810e..55e43586d 100755
--- a/test/cases/vmware.sh
+++ b/test/cases/vmware.sh
@@ -5,7 +5,7 @@ source /usr/libexec/osbuild-composer-test/set-env-variables.sh
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 if [ "$ID" != "rhel" ]; then
diff --git a/tools/libvirt_test.sh b/tools/libvirt_test.sh
index 8663d7106..8a111e758 100755
--- a/tools/libvirt_test.sh
+++ b/tools/libvirt_test.sh
@@ -21,7 +21,7 @@ fi
 
 # Colorful output.
 function greenprint {
-    echo -e "\033[1;32m${1}\033[0m"
+    echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
 # Start libvirtd and test it.