diff --git a/packages/curl/Containerfile b/packages/curl/Containerfile
index 660f71c..e7432ad 100644
--- a/packages/curl/Containerfile
+++ b/packages/curl/Containerfile
@@ -3,6 +3,7 @@ ENV VERSION=8.9.1
 ENV SRC_HASH=f292f6cc051d5bbabf725ef85d432dfeacc8711dd717ea97612ae590643801e5
 ENV SRC_FILE=curl-${VERSION}.tar.xz
 ENV SRC_SITE=https://curl.se/download/${SRC_FILE}
+ENV SOURCE_DATE_EPOCH=1
 
 FROM base as fetch
 ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .
diff --git a/packages/perl-module-build/Containerfile b/packages/perl-module-build/Containerfile
index 2381a41..42d79e1 100644
--- a/packages/perl-module-build/Containerfile
+++ b/packages/perl-module-build/Containerfile
@@ -3,6 +3,7 @@ ENV VERSION=0.4234
 ENV SRC_HASH=66aeac6127418be5e471ead3744648c766bd01482825c5b66652675f2bc86a8f
 ENV SRC_FILE=Module-Build-${VERSION}.tar.gz
 ENV SRC_SITE=https://search.cpan.org/CPAN/authors/id/L/LE/LEONT/${SRC_FILE}
+ENV SOURCE_DATE_EPOCH=1
 
 FROM base as fetch
 ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .
diff --git a/packages/po4a/Containerfile b/packages/po4a/Containerfile
index 09cbc3b..835d01c 100644
--- a/packages/po4a/Containerfile
+++ b/packages/po4a/Containerfile
@@ -3,6 +3,7 @@ ENV VERSION=0.73
 ENV SRC_HASH=ad5edc38bf004807843622fddbf67bd5ac604fc16e14c2bfefa7b07718ad21f3
 ENV SRC_FILE=v${VERSION}.tar.gz
 ENV SRC_SITE=https://github.com/mquinson/po4a/archive/refs/tags/${SRC_FILE}
+ENV SOURCE_DATE_EPOCH=1
 
 FROM base as fetch
 ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .