diff --git a/.github/workflows/cargo-audit.yml b/.github/workflows/cargo-audit.yml
index dcd8383..796a0cd 100644
--- a/.github/workflows/cargo-audit.yml
+++ b/.github/workflows/cargo-audit.yml
@@ -19,4 +19,5 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions-rs/audit-check@v1
         with:
+          args: --color=always
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/cargo-clippy.yml b/.github/workflows/cargo-clippy.yml
index bd271ff..3b459a8 100644
--- a/.github/workflows/cargo-clippy.yml
+++ b/.github/workflows/cargo-clippy.yml
@@ -20,5 +20,5 @@ jobs:
           components: clippy
       - uses: actions-rs/clippy-check@v1
         with:
-          args: --all-targets --all-features -- -D warnings -D clippy::all
+          args: --all-targets --all-features --color=always -- -D warnings -D clippy::all
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/cargo-fmt.yml b/.github/workflows/cargo-fmt.yml
index 5edca49..23fb9e8 100644
--- a/.github/workflows/cargo-fmt.yml
+++ b/.github/workflows/cargo-fmt.yml
@@ -18,4 +18,4 @@ jobs:
       - uses: actions-rs/cargo@v1
         with:
           command: fmt
-          args: -- --check
+          args: -- --check --color=always
diff --git a/.github/workflows/cargo-test.yml b/.github/workflows/cargo-test.yml
index a4ad149..d827bca 100644
--- a/.github/workflows/cargo-test.yml
+++ b/.github/workflows/cargo-test.yml
@@ -14,12 +14,12 @@ jobs:
       - uses: actions/checkout@v2
       - uses: cachix/install-nix-action@v12
         with:
-          nix_path: nixpkgs=channel:nixos-unstable
+          nix_path: nixpkgs=channel:nixos-stable
       # - uses: cachix/cachix-action@v8
       #   with:
       #     name: zoxide
       #     authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
-      - run: nix-shell --run "cargo test --no-fail-fast"
+      - run: nix-shell --pure --run "cargo test --all-features --all-targets --color=always --no-fail-fast"
   test-windows:
     runs-on: windows-latest
     steps:
@@ -32,4 +32,4 @@ jobs:
       - uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --all-features --no-fail-fast
+          args: --all-features --all-targets --color=always --no-fail-fast
diff --git a/.github/workflows/cargo-udeps.yml b/.github/workflows/cargo-udeps.yml
index 9888bc9..9242ec3 100644
--- a/.github/workflows/cargo-udeps.yml
+++ b/.github/workflows/cargo-udeps.yml
@@ -22,4 +22,4 @@ jobs:
           crate: cargo-udeps
           version: latest
           use-tool-cache: true
-      - run: cargo udeps --all-features --all-targets
+      - run: cargo udeps --all-features --all-targets --color=always
diff --git a/src/shell.rs b/src/shell.rs
index 0cb9baf..2b73b58 100644
--- a/src/shell.rs
+++ b/src/shell.rs
@@ -104,7 +104,7 @@ mod tests {
                     let opts = dbg!(&opts()[i]);
                     let source = Bash(opts).render().unwrap();
                     Command::new("bash")
-                        .args(&["-c", &source])
+                        .args(&["-c", &source, "--noediting", "--noprofile", "--norc"])
                         .assert()
                         .success()
                         .stdout("")
@@ -145,7 +145,7 @@ mod tests {
                     let opts = dbg!(&opts()[i]);
                     let source = Fish(opts).render().unwrap();
                     Command::new("fish")
-                        .args(&["-c", &source])
+                        .args(&["--command", &source, "--private"])
                         .assert()
                         .success()
                         .stdout("")
@@ -159,7 +159,7 @@ mod tests {
                     let opts = dbg!(&opts()[i]);
                     let source = Posix(opts).render().unwrap();
                     let assert = Command::new("bash")
-                        .args(&["--posix", "-c", &source])
+                        .args(&["--posix", "-c", &source, "--noediting", "--noprofile", "--norc"])
                         .assert()
                         .success()
                         .stderr("");
@@ -218,7 +218,7 @@ mod tests {
                 let opts = dbg!(&opts()[i]);
                     let source = PowerShell(opts).render().unwrap();
                     Command::new("pwsh")
-                        .args(&["-c", &source])
+                        .args(&["-Command", &source, "-NoLogo", "-NonInteractive", "-NoProfile"])
                         .assert()
                         .success()
                         .stdout("")
@@ -269,7 +269,7 @@ mod tests {
                     let opts = dbg!(&opts()[i]);
                     let source = Xonsh(opts).render().unwrap();
                     Command::new("xonsh")
-                        .args(&["-c", &source])
+                        .args(&["-c", &source, "--no-rc"])
                         .assert()
                         .success()
                         .stdout("")
@@ -281,7 +281,7 @@ mod tests {
                     let opts = dbg!(&opts()[i]);
                     let source = Zsh(opts).render().unwrap();
                     Command::new("zsh")
-                        .args(&["-c", &source])
+                        .args(&["-c", &source, "--no-rcs"])
                         .assert()
                         .success()
                         .stdout("")