diff --git a/.github/workflows/sonarqube.yml b/.github/workflows/sonarqube.yml.save
similarity index 100%
rename from .github/workflows/sonarqube.yml
rename to .github/workflows/sonarqube.yml.save
diff --git a/ChangeLog b/ChangeLog
index 6140567a..b07bf002 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 12/11/2024
 - code: loop over authz arrays with index instead of pointer
 - code: avoid embedding defines in macro arguments
+- code: avoid cast warnings
 
 12/10/2024
 - github: add SonarQube analysis to Github workflows
diff --git a/src/cache/file.c b/src/cache/file.c
index 894fd2af..06902da0 100644
--- a/src/cache/file.c
+++ b/src/cache/file.c
@@ -126,7 +126,7 @@ static apr_status_t oidc_cache_file_read(request_rec *r, const char *path, apr_f
 /*
  * write a specified number of bytes from a buffer to a cache file
  */
-static apr_status_t oidc_cache_file_write(request_rec *r, const char *path, apr_file_t *fd, void *buf,
+static apr_status_t oidc_cache_file_write(request_rec *r, const char *path, apr_file_t *fd, const void *buf,
 					  const apr_size_t len) {
 
 	apr_status_t rc = APR_SUCCESS;
@@ -409,7 +409,7 @@ static apr_byte_t oidc_cache_file_set(request_rec *r, const char *section, const
 		return FALSE;
 
 	/* next write the value */
-	oidc_cache_file_write(r, path, fd, (void *)value, info.len);
+	oidc_cache_file_write(r, path, fd, (const void *)value, info.len);
 
 	/* unlock and close the written file */
 	apr_file_unlock(fd);
diff --git a/src/handle/logout.c b/src/handle/logout.c
index 4647d159..626dd4fc 100644
--- a/src/handle/logout.c
+++ b/src/handle/logout.c
@@ -481,7 +481,7 @@ int oidc_logout(request_rec *r, oidc_cfg_t *c, oidc_session_t *session) {
 		if (apr_table_get(r->subprocess_env, OIDC_REFRESH_TOKENS_BEFORE_LOGOUT_ENVVAR) != NULL) {
 			oidc_refresh_token_grant(r, c, session, provider, NULL, NULL, &id_token_hint);
 		} else {
-			id_token_hint = (char *)oidc_session_get_idtoken(r, session);
+			id_token_hint = apr_pstrdup(r->pool, oidc_session_get_idtoken(r, session));
 		}
 
 		s_logout_request = apr_pstrdup(r->pool, oidc_cfg_provider_end_session_endpoint_get(provider));
diff --git a/src/handle/response.c b/src/handle/response.c
index e70a2fd4..2dd949b7 100644
--- a/src/handle/response.c
+++ b/src/handle/response.c
@@ -719,7 +719,7 @@ int oidc_response_authorization_post(request_rec *r, oidc_cfg_t *c, oidc_session
 	}
 
 	/* get the parameters */
-	response_mode = (char *)apr_table_get(params, OIDC_PROTO_RESPONSE_MODE);
+	response_mode = apr_table_get(params, OIDC_PROTO_RESPONSE_MODE);
 
 	/* do the actual implicit work */
 	return oidc_response_process(r, c, session, params,