diff --git a/Cargo.lock b/Cargo.lock
index 9c397c555d..74947c4835 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2132,13 +2132,13 @@ checksum = "f9fbbcab51052fe104eb5e5d351cf728d30a5be1fe14d9be8a3b097481fb97de"
 
 [[package]]
 name = "libredox"
-version = "0.1.4"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1580801010e535496706ba011c15f8532df6b42297d2e471fec38ceadd8c0638"
+checksum = "3d0b95e02c851351f877147b7deea7b1afb1df71b63aa5f8270716e0c5720616"
 dependencies = [
  "bitflags 2.9.1",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.7.0",
 ]
 
 [[package]]
@@ -2547,7 +2547,7 @@ checksum = "bc838d2a56b5b1a6c25f55575dfc605fabb63bb2365f6c2353ef9159aa69e4a5"
 dependencies = [
  "cfg-if",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.5.13",
  "smallvec",
  "windows-targets 0.52.6",
 ]
@@ -2970,6 +2970,15 @@ dependencies = [
  "bitflags 2.9.1",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49f3fe0889e69e2ae9e41f4d6c4c0181701d00e4697b356fb1f74173a5e0ee27"
+dependencies = [
+ "bitflags 2.9.1",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.1"
@@ -3923,7 +3932,6 @@ dependencies = [
  "time",
  "tracing",
  "uuid",
- "whoami",
 ]
 
 [[package]]
@@ -4709,12 +4717,6 @@ dependencies = [
  "wit-bindgen-rt",
 ]
 
-[[package]]
-name = "wasite"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8dad83b4f25e74f184f64c43b150b91efe7647395b42289f38e50566d82855b"
-
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.100"
@@ -4828,12 +4830,11 @@ dependencies = [
 
 [[package]]
 name = "whoami"
-version = "1.6.0"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6994d13118ab492c3c80c1f81928718159254c53c472bf9ce36f8dae4add02a7"
+checksum = "ace4d5c7b5ab3d99629156d4e0997edbe98a4beb6d5ba99e2cae830207a81983"
 dependencies = [
- "redox_syscall",
- "wasite",
+ "libredox",
 ]
 
 [[package]]
diff --git a/sqlx-mysql/Cargo.toml b/sqlx-mysql/Cargo.toml
index ee9512b61e..8a7c9cef38 100644
--- a/sqlx-mysql/Cargo.toml
+++ b/sqlx-mysql/Cargo.toml
@@ -65,7 +65,6 @@ percent-encoding = "2.1.0"
 smallvec = "1.7.0"
 stringprep = "0.1.2"
 tracing = { version = "0.1.37", features = ["log"] }
-whoami = { version = "1.2.1", default-features = false }
 
 dotenvy.workspace = true
 thiserror.workspace = true
diff --git a/sqlx-postgres/Cargo.toml b/sqlx-postgres/Cargo.toml
index ceec9eb648..89016c8088 100644
--- a/sqlx-postgres/Cargo.toml
+++ b/sqlx-postgres/Cargo.toml
@@ -65,7 +65,7 @@ num-bigint = { version = "0.4.3", optional = true }
 smallvec = { version = "1.7.0", features = ["serde"] }
 stringprep = "0.1.2"
 tracing = { version = "0.1.37", features = ["log"] }
-whoami = { version = "1.2.1", default-features = false }
+whoami = { version = "2.0.2", default-features = false }
 
 dotenvy.workspace = true
 thiserror.workspace = true
diff --git a/sqlx-postgres/src/options/mod.rs b/sqlx-postgres/src/options/mod.rs
index efbc43989b..230eeb4a0a 100644
--- a/sqlx-postgres/src/options/mod.rs
+++ b/sqlx-postgres/src/options/mod.rs
@@ -64,7 +64,13 @@ impl PgConnectOptions {
             .or_else(|| var("PGHOST").ok())
             .unwrap_or_else(|| default_host(port));
 
-        let username = var("PGUSER").ok().unwrap_or_else(whoami::username);
+        let username = if let Ok(username) = var("PGUSER") {
+            username
+        } else if let Ok(username) = whoami::username() {
+            username
+        } else {
+            "unknown".to_string()
+        };
 
         let database = var("PGDATABASE").ok();