diff --git a/build.rs b/build.rs
index ccaa98f..7714837 100644
--- a/build.rs
+++ b/build.rs
@@ -4,9 +4,11 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // Emit version information (if not cached by just vendor)
     let mut vergen = vergen::EmitBuilder::builder();
+    println!("cargo:rerun-if-env-changed=VERGEN_GIT_COMMIT_DATE");
     if std::env::var_os("VERGEN_GIT_COMMIT_DATE").is_none() {
         vergen.git_commit_date();
     }
+    println!("cargo:rerun-if-env-changed=VERGEN_GIT_SHA");
     if std::env::var_os("VERGEN_GIT_SHA").is_none() {
         vergen.git_sha(true);
     }
diff --git a/debian/control b/debian/control
index 97e6177..76c1214 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,6 @@ Priority: optional
 Maintainer: Jeremy Soller <jeremy@system76.com>
 Build-Depends:
     debhelper-compat (=13),
-    git,
     just (>= 1.13.0),
     pkg-config,
     rust-all,
diff --git a/justfile b/justfile
index 9ae289d..29e3fda 100644
--- a/justfile
+++ b/justfile
@@ -71,14 +71,21 @@ uninstall:
 
 # Vendor dependencies locally
 vendor:
+    #!/usr/bin/env bash
     mkdir -p .cargo
-    cargo vendor --sync Cargo.toml \
-        | head -n -1 > .cargo/config.toml
+    cargo vendor --sync Cargo.toml | head -n -1 > .cargo/config.toml
     echo 'directory = "vendor"' >> .cargo/config.toml
     echo >> .cargo/config.toml
     echo '[env]' >> .cargo/config.toml
-    echo "VERGEN_GIT_COMMIT_DATE = \"$(git log -1 --pretty=format:'%cs' HEAD)\"" >> .cargo/config.toml
-    echo "VERGEN_GIT_SHA = \"$(git rev-parse --short HEAD)\"" >> .cargo/config.toml
+    if [ -n "${SOURCE_DATE_EPOCH}" ]
+    then
+        source_date="$(date -d "@${SOURCE_DATE_EPOCH}" "+%Y-%m-%d")"
+        echo "VERGEN_GIT_COMMIT_DATE = \"${source_date}\"" >> .cargo/config.toml
+    fi
+    if [ -n "${SOURCE_GIT_HASH}" ]
+    then
+        echo "VERGEN_GIT_SHA = \"${SOURCE_GIT_HASH}\"" >> .cargo/config.toml
+    fi
     tar pcf vendor.tar .cargo vendor
     rm -rf .cargo vendor