diff --git a/NEWS.md b/NEWS.md
index 4496c023..aa45f1f1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -22,6 +22,9 @@
   optional in many cases. This is only applicable to Connect servers hosted on
   Snowflake.
 
+* Push-button publishing from desktop RStudio is now compatible with Connect
+  servers hosted on Snowflake.
+
 # rsconnect 1.7.0
 
 * Added support for deploying from `manifest.json` files created by
diff --git a/R/http.R b/R/http.R
index dd54e5b4..5ec846bf 100644
--- a/R/http.R
+++ b/R/http.R
@@ -543,6 +543,12 @@ authHeaders <- function(authInfo, method, path, file = NULL) {
     if (!is.null(authInfo$apiKey)) {
       headers$`X-RSC-Authorization` <- paste("Key", authInfo$apiKey)
     }
+    # When using the "token" flow rather than an API key, we also need the
+    # signature headers.
+    if (!is.null(authInfo$secret) || !is.null(authInfo$private_key)) {
+      sig_headers <- signatureHeaders(authInfo, method, path, file)
+      headers <- c(headers, sig_headers)
+    }
     headers
   } else if (!is.null(authInfo$secret) || !is.null(authInfo$private_key)) {
     signatureHeaders(authInfo, method, path, file)
diff --git a/tests/testthat/test-spcs.R b/tests/testthat/test-spcs.R
index 6cef9643..7fbe7565 100644
--- a/tests/testthat/test-spcs.R
+++ b/tests/testthat/test-spcs.R
@@ -53,6 +53,87 @@ test_that("authHeaders handles snowflakeToken with API key", {
   expect_equal(headers$`X-Custom-Header`, "custom-value")
 })
 
+test_that("authHeaders handles snowflakeToken with token + secret", {
+  local_mocked_bindings(
+    rfc2616Date = function() "Thu, 09 Mar 2023 14:29:00 GMT"
+  )
+
+  authInfo <- list(
+    token = "connect-token-123",
+    secret = openssl::base64_encode("shared-secret"),
+    snowflakeToken = list(
+      Authorization = "Snowflake Token=\"mock_token\""
+    )
+  )
+
+  headers <- authHeaders(authInfo, "GET", "/path")
+
+  # Verify snowflakeToken header
+  expect_equal(headers$Authorization, "Snowflake Token=\"mock_token\"")
+
+  # Verify signature headers are present
+  expect_equal(headers$`X-Auth-Token`, "connect-token-123")
+  expect_equal(headers$Date, "Thu, 09 Mar 2023 14:29:00 GMT")
+  expect_true(!is.null(headers$`X-Auth-Signature`))
+  expect_true(!is.null(headers$`X-Content-Checksum`))
+})
+
+test_that("authHeaders handles snowflakeToken with token + private_key", {
+  local_mocked_bindings(
+    rfc2616Date = function() "Thu, 09 Mar 2023 14:29:00 GMT"
+  )
+
+  # Use same test key as test-http.R
+  key_string <- "-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----"
+  key <- openssl::base64_encode(openssl::read_key(key_string))
+
+  authInfo <- list(
+    token = "connect-token-456",
+    private_key = key,
+    snowflakeToken = list(
+      Authorization = "Snowflake Token=\"mock_token\""
+    )
+  )
+
+  headers <- authHeaders(authInfo, "GET", "/path")
+
+  # Verify snowflakeToken header
+  expect_equal(headers$Authorization, "Snowflake Token=\"mock_token\"")
+
+  # Verify signature headers are present
+  expect_equal(headers$`X-Auth-Token`, "connect-token-456")
+  expect_equal(headers$Date, "Thu, 09 Mar 2023 14:29:00 GMT")
+  expect_true(!is.null(headers$`X-Auth-Signature`))
+  expect_true(!is.null(headers$`X-Content-Checksum`))
+})
+
 test_that("registerAccount stores snowflakeConnectionName", {
   local_temp_config()