diff --git a/dev-python/pandas/pandas-1.1.5.ebuild b/dev-python/pandas/pandas-1.1.5-r1.ebuild
similarity index 99%
rename from dev-python/pandas/pandas-1.1.5.ebuild
rename to dev-python/pandas/pandas-1.1.5-r1.ebuild
index 89393e785bc50..75aeaa4bcee43 100644
--- a/dev-python/pandas/pandas-1.1.5.ebuild
+++ b/dev-python/pandas/pandas-1.1.5-r1.ebuild
@@ -124,6 +124,10 @@ python_prepare_all() {
 	distutils-r1_python_prepare_all
 }
 
+python_compile() {
+	distutils-r1_python_compile -j1
+}
+
 python_compile_all() {
 	# To build docs the need be located in $BUILD_DIR,
 	# else PYTHONPATH points to unusable modules.
diff --git a/dev-python/pandas/pandas-1.2.1.ebuild b/dev-python/pandas/pandas-1.2.1-r1.ebuild
similarity index 99%
rename from dev-python/pandas/pandas-1.2.1.ebuild
rename to dev-python/pandas/pandas-1.2.1-r1.ebuild
index 5a54eac96e6e6..05a432d365571 100644
--- a/dev-python/pandas/pandas-1.2.1.ebuild
+++ b/dev-python/pandas/pandas-1.2.1-r1.ebuild
@@ -121,6 +121,10 @@ python_prepare_all() {
 	distutils-r1_python_prepare_all
 }
 
+python_compile() {
+	distutils-r1_python_compile -j1
+}
+
 python_compile_all() {
 	# To build docs the need be located in $BUILD_DIR,
 	# else PYTHONPATH points to unusable modules.
diff --git a/dev-python/pandas/pandas-1.2.2.ebuild b/dev-python/pandas/pandas-1.2.2-r1.ebuild
similarity index 99%
rename from dev-python/pandas/pandas-1.2.2.ebuild
rename to dev-python/pandas/pandas-1.2.2-r1.ebuild
index 2bfbf0f7609a6..a79b5b1c18ca1 100644
--- a/dev-python/pandas/pandas-1.2.2.ebuild
+++ b/dev-python/pandas/pandas-1.2.2-r1.ebuild
@@ -121,6 +121,10 @@ python_prepare_all() {
 	distutils-r1_python_prepare_all
 }
 
+python_compile() {
+	distutils-r1_python_compile -j1
+}
+
 python_compile_all() {
 	# To build docs the need be located in $BUILD_DIR,
 	# else PYTHONPATH points to unusable modules.
diff --git a/dev-python/pandas/pandas-1.2.3.ebuild b/dev-python/pandas/pandas-1.2.3-r1.ebuild
similarity index 99%
rename from dev-python/pandas/pandas-1.2.3.ebuild
rename to dev-python/pandas/pandas-1.2.3-r1.ebuild
index 2bfbf0f7609a6..a79b5b1c18ca1 100644
--- a/dev-python/pandas/pandas-1.2.3.ebuild
+++ b/dev-python/pandas/pandas-1.2.3-r1.ebuild
@@ -121,6 +121,10 @@ python_prepare_all() {
 	distutils-r1_python_prepare_all
 }
 
+python_compile() {
+	distutils-r1_python_compile -j1
+}
+
 python_compile_all() {
 	# To build docs the need be located in $BUILD_DIR,
 	# else PYTHONPATH points to unusable modules.