diff --git a/build.zig.zon b/build.zig.zon
index 208fc56..9f94bb4 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -7,8 +7,8 @@
             .hash = "12208a01a7c10d0583f253787cf7271587d9509862f34e2b6d754cade7bc08500ef6",
         },
         .zmpl = .{
-            .url = "https://github.com/jetzig-framework/zmpl/archive/97bc2ab63bc6938baeba2b5b615138e77e2fadcd.tar.gz",
-            .hash = "122007b478f550b24db9a20c807695d24ac4645ab8934ce59edffb82eabcb2cc27d0",
+            .url = "https://github.com/jetzig-framework/zmpl/archive/a128d0a9c9cd70ca9f007405ae3d17e3a074ab34.tar.gz",
+            .hash = "1220e1e95a5479b24e1c5448c5dc4ad283a01050617d0e5d9ff1c7e7283c639df24a",
         },
         .jetkv = .{
             .url = "https://github.com/jetzig-framework/jetkv/archive/2b1130a48979ea2871c8cf6ca89c38b1e7062839.tar.gz",
diff --git a/src/jetzig/http/Session.zig b/src/jetzig/http/Session.zig
index 6f27228..a282c8c 100644
--- a/src/jetzig/http/Session.zig
+++ b/src/jetzig/http/Session.zig
@@ -76,6 +76,18 @@ pub fn put(self: *Self, key: []const u8, value: *jetzig.data.Value) !void {
     try self.save();
 }
 
+// removes true if a value was removed
+// and false otherwise
+pub fn remove(self: *Self, key: []const u8) !bool {
+    if (self.state != .parsed) return error.UnparsedSessionCookie;
+
+    // copied from `get()`
+    return switch (self.data.value.?.*) {
+        .object => self.data.value.?.object.remove(key),
+        else => unreachable,
+    };
+}
+
 fn save(self: *Self) !void {
     if (self.state != .parsed) return error.UnparsedSessionCookie;
 
@@ -166,6 +178,28 @@ test "put and get session key/value" {
     try std.testing.expectEqualStrings(try value.toString(), "bar");
 }
 
+test "remove session key/value" {
+    const allocator = std.testing.allocator;
+    var cookies = jetzig.http.Cookies.init(allocator, "");
+    defer cookies.deinit();
+    try cookies.parse();
+
+    const secret: [Cipher.key_length]u8 = [_]u8{0x69} ** Cipher.key_length;
+    var session = Self.init(allocator, &cookies, &secret);
+    defer session.deinit();
+
+    var data = jetzig.data.Data.init(allocator);
+    defer data.deinit();
+
+    try session.parse();
+    try session.put("foo", data.string("bar"));
+    var value = (try session.get("foo")).?;
+    try std.testing.expectEqualStrings(try value.toString(), "bar");
+
+    try std.testing.expectEqual(true, try session.remove("foo"));
+    try std.testing.expectEqual(null, try session.get("foo"));
+}
+
 test "get value from parsed/decrypted cookie" {
     const allocator = std.testing.allocator;
     var cookies = jetzig.http.Cookies.init(