diff --git a/mail-client/evolution/evolution-3.50.2.ebuild b/mail-client/evolution/evolution-3.50.2.ebuild
index 74293119e3ca3..d2ea0aa53be8c 100644
--- a/mail-client/evolution/evolution-3.50.2.ebuild
+++ b/mail-client/evolution/evolution-3.50.2.ebuild
@@ -138,7 +138,8 @@ src_compile() {
 }
 
 src_test() {
-	cmake_src_test
+	# -j1: https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/522
+	cmake_src_test -j1
 }
 
 src_install() {
diff --git a/mail-client/evolution/evolution-3.50.4-r1.ebuild b/mail-client/evolution/evolution-3.50.4-r1.ebuild
index 6695759493a3f..82f499b4d1c57 100644
--- a/mail-client/evolution/evolution-3.50.4-r1.ebuild
+++ b/mail-client/evolution/evolution-3.50.4-r1.ebuild
@@ -140,7 +140,8 @@ src_compile() {
 }
 
 src_test() {
-	cmake_src_test
+	# -j1: https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/522
+	cmake_src_test -j1
 }
 
 src_install() {
diff --git a/mail-client/evolution/evolution-3.50.4.ebuild b/mail-client/evolution/evolution-3.50.4.ebuild
index 8f920528f44df..3ef4b2f977802 100644
--- a/mail-client/evolution/evolution-3.50.4.ebuild
+++ b/mail-client/evolution/evolution-3.50.4.ebuild
@@ -138,7 +138,8 @@ src_compile() {
 }
 
 src_test() {
-	cmake_src_test
+	# -j1: https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/522
+	cmake_src_test -j1
 }
 
 src_install() {
diff --git a/mail-client/evolution/evolution-3.52.2.ebuild b/mail-client/evolution/evolution-3.52.2.ebuild
index b38c7fda6a5af..5e3c21998ec51 100644
--- a/mail-client/evolution/evolution-3.52.2.ebuild
+++ b/mail-client/evolution/evolution-3.52.2.ebuild
@@ -136,7 +136,8 @@ src_compile() {
 }
 
 src_test() {
-	cmake_src_test
+	# -j1: https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/522
+	cmake_src_test -j1
 }
 
 src_install() {
diff --git a/mail-client/evolution/evolution-3.52.4.ebuild b/mail-client/evolution/evolution-3.52.4.ebuild
index 20a459401c3e2..bd2df262d68d3 100644
--- a/mail-client/evolution/evolution-3.52.4.ebuild
+++ b/mail-client/evolution/evolution-3.52.4.ebuild
@@ -136,7 +136,8 @@ src_compile() {
 }
 
 src_test() {
-	cmake_src_test
+	# -j1: https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/522
+	cmake_src_test -j1
 }
 
 src_install() {