diff --git a/Cargo.lock b/Cargo.lock
index 1ab5044..a0baca0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -374,7 +374,7 @@ checksum = "0b6a852b24ab71dffc585bcb46eaf7959d175cb865a7152e35b348d1b2960422"
 [[package]]
 name = "conformance-tests"
 version = "0.1.0"
-source = "git+https://github.com/fermyon/conformance-tests?branch=main#6e30479fda142cbe49763cba888e20c13383123f"
+source = "git+https://github.com/fermyon/conformance-tests?branch=main#db0ee32a825561d35f884a246e1d390134d78823"
 dependencies = [
  "anyhow",
  "flate2",
@@ -2601,7 +2601,7 @@ dependencies = [
 [[package]]
 name = "test-environment"
 version = "0.1.0"
-source = "git+https://github.com/fermyon/conformance-tests?branch=main#6e30479fda142cbe49763cba888e20c13383123f"
+source = "git+https://github.com/fermyon/conformance-tests?branch=main#db0ee32a825561d35f884a246e1d390134d78823"
 dependencies = [
  "anyhow",
  "fslock",
diff --git a/conformance-tests/src/main.rs b/conformance-tests/src/main.rs
index c0718c2..1e0e764 100644
--- a/conformance-tests/src/main.rs
+++ b/conformance-tests/src/main.rs
@@ -30,6 +30,7 @@ fn run_test(test: conformance_tests::Test) -> Result<(), anyhow::Error> {
             conformance_tests::config::Precondition::TcpEcho => {}
             conformance_tests::config::Precondition::KeyValueStore(_) => {}
             conformance_tests::config::Precondition::Sqlite => {}
+            conformance_tests::config::Precondition::Redis => {}
         }
     }
     for invocation in test.config.invocations {
@@ -47,8 +48,8 @@ fn run_test(test: conformance_tests::Test) -> Result<(), anyhow::Error> {
 /// When encountering a magic key-value pair, substitute the value with a different value.
 fn substitution(key: &str, value: &str) -> Option<String> {
     match (key, value) {
-        ("port", "7") => Some(7.to_string()),
         ("port", "80") => Some(HTTP_PORT.to_string()),
+        ("port", port) => Some(port.to_owned()),
         _ => panic!("Unexpected substitution: {} = {}", key, value),
     }
 }
diff --git a/crates/router/src/lib.rs b/crates/router/src/lib.rs
index 06b7833..c621454 100644
--- a/crates/router/src/lib.rs
+++ b/crates/router/src/lib.rs
@@ -125,10 +125,7 @@ fn apply_request_transformations(
     let headers_to_add = calculate_default_headers(&request, base, route_match)
         .context("could not calculate default headers for request")?
         .into_iter()
-        .flat_map(|(k, v)| {
-            k.into_iter()
-                .map(move |s| (s.to_string(), v.clone().into_bytes()))
-        })
+        .flat_map(|(k, v)| k.into_iter().map(move |s| (s, v.clone().into_bytes())))
         .chain(request.headers().entries());
     let headers = Headers::new();
     for (key, value) in headers_to_add {
diff --git a/crates/spin-test-virt/src/lib.rs b/crates/spin-test-virt/src/lib.rs
index fcf7eba..a77fb77 100644
--- a/crates/spin-test-virt/src/lib.rs
+++ b/crates/spin-test-virt/src/lib.rs
@@ -364,11 +364,49 @@ impl redis::GuestConnection for RedisConnection {
     fn execute(
         &self,
         command: String,
-        arguments: Vec<redis::RedisParameter>,
+        mut arguments: Vec<redis::RedisParameter>,
     ) -> Result<Vec<redis::RedisResult>, redis::Error> {
-        let _ = (command, arguments);
-        // TODO: implement this by getting input from user
-        Err(redis::Error::Other("not yet implemented".into()))
+        let mut get_binary = || match arguments.pop().ok_or(redis::Error::TypeError)? {
+            redis::RedisParameter::Int64(_) => Err(redis::Error::TypeError),
+            redis::RedisParameter::Binary(b) => Ok(b),
+        };
+        match command.as_str() {
+            "incr" => {
+                let key = get_binary()?;
+                let key = String::from_utf8(key).map_err(|_| redis::Error::TypeError)?;
+                self.incr(key).map(|i| vec![redis::RedisResult::Int64(i)])
+            }
+            "set" => {
+                let value = get_binary()?;
+                let key = get_binary()?;
+                let key = String::from_utf8(key).map_err(|_| redis::Error::TypeError)?;
+                self.set(key, value);
+                Ok(vec![])
+            }
+            "append" => {
+                let value = get_binary()?;
+                let key = get_binary()?;
+                let key = String::from_utf8(key).map_err(|_| redis::Error::TypeError)?;
+                let mut current = self.get(key.clone())?.unwrap_or_default();
+                current.extend(value);
+                self.set(key, current);
+                Ok(vec![])
+            }
+            "get" => {
+                let key = get_binary()?;
+                let key = String::from_utf8(key).map_err(|_| redis::Error::TypeError)?;
+                let value = self.get(key)?;
+                Ok(value
+                    .map(|v| vec![redis::RedisResult::Binary(v)])
+                    .unwrap_or_default())
+            }
+            _ => {
+                // TODO: implement this by getting input from user
+                Err(redis::Error::Other(format!(
+                    "not able to execute '{command}' command"
+                )))
+            }
+        }
     }
 }
 
diff --git a/crates/spin-test-virt/src/wasi/http.rs b/crates/spin-test-virt/src/wasi/http.rs
index a4a46ac..ae9744b 100644
--- a/crates/spin-test-virt/src/wasi/http.rs
+++ b/crates/spin-test-virt/src/wasi/http.rs
@@ -335,7 +335,7 @@ impl exports::types::GuestFields for Fields {
     ) -> Result<exports::types::Fields, exports::types::HeaderError> {
         let mut fields: HashMap<String, Vec<Vec<u8>>> = HashMap::new();
         for (k, v) in entries {
-            fields.entry(k).or_default().push(v);
+            fields.entry(k.to_lowercase()).or_default().push(v);
         }
         let fields = Fields {
             fields: RefCell::new(fields),
@@ -346,7 +346,8 @@ impl exports::types::GuestFields for Fields {
     fn get(&self, name: exports::types::FieldKey) -> Vec<exports::types::FieldValue> {
         self.fields
             .borrow()
-            .get(&name)
+            // Downcase the key to make it case-insensitive
+            .get(&name.to_lowercase())
             .map(Clone::clone)
             .unwrap_or_default()
     }
@@ -375,7 +376,7 @@ impl exports::types::GuestFields for Fields {
         // TODO: check for mutability rules
         self.fields
             .borrow_mut()
-            .entry(name)
+            .entry(name.to_lowercase())
             .or_default()
             .push(value);
         Ok(())