diff --git a/user/common/template/Android.nix b/user/common/template/Android.nix
index 39d9c8a1..d8ef3c0d 100644
--- a/user/common/template/Android.nix
+++ b/user/common/template/Android.nix
@@ -49,10 +49,11 @@
 				];
 				buildInputs = with pkgs; [];
 
-				GRADLE_OPTS      = "-Dorg.gradle.project.android.aapt2FromMavenOverride=${androidSdk}/libexec/android-sdk/build-tools/${buildTools}/aapt2";
-				JAVA_HOME        = "${jdk}";
-				LD_LIBRARY_PATH  = "${lib.makeLibraryPath buildInputs}";
-				ANDROID_SDK_ROOT = "${androidSdk}/libexec/android-sdk/";
+				GRADLE_OPTS       = "-Dorg.gradle.project.android.aapt2FromMavenOverride = ${androidSdk}/libexec/android-sdk/build-tools/${buildTools}/aapt2";
+				JAVA_HOME         = "${jdk}";
+				LD_LIBRARY_PATH   = "${lib.makeLibraryPath buildInputs}";
+				ANDROID_SDK_ROOT  = "${androidSdk}/libexec/android-sdk/";
+				SOURCE_DATE_EPOCH = "${toString(self.lastModified)}";
 			};
 		};
 	};
diff --git a/user/common/template/Blank.nix b/user/common/template/Blank.nix
index ebcae41f..6d365668 100644
--- a/user/common/template/Blank.nix
+++ b/user/common/template/Blank.nix
@@ -14,6 +14,8 @@
 			default = pkgs.mkShell rec {
 				nativeBuildInputs = with pkgs; [ ];
 				buildInputs = with pkgs; [ ];
+
+				SOURCE_DATE_EPOCH = "${toString(self.lastModified)}";
 			};
 		};
 	};
diff --git a/user/common/template/Latex.nix b/user/common/template/Latex.nix
index cee148a4..131d42eb 100644
--- a/user/common/template/Latex.nix
+++ b/user/common/template/Latex.nix
@@ -47,6 +47,7 @@
 					tex
 				];
 				buildInputs = with pkgs; [ ];
+				SOURCE_DATE_EPOCH = "${toString(self.lastModified)}";
 			};
 		};
 	};
diff --git a/user/common/template/Rust.nix b/user/common/template/Rust.nix
index a50c097d..a3559a58 100644
--- a/user/common/template/Rust.nix
+++ b/user/common/template/Rust.nix
@@ -32,6 +32,7 @@
 				xorg.libXi
 			];
 			LD_LIBRARY_PATH = "${lib.makeLibraryPath buildInputs}";
+			SOURCE_DATE_EPOCH = "${toString(self.lastModified)}";
 		};
 	};
 }